141664640 has 64 divisors (see below), whose sum is σ = 364739760. Its totient is φ = 52303872.

The previous prime is 141664619. The next prime is 141664643. The reversal of 141664640 is 46466141.

141664640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 141664597 and 141664606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (141664643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194 + ... + 16833.

Almost surely, 2^141664640 is an apocalyptic number.

141664640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 141664640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182369880).

141664640 is an abundant number, since it is smaller than the sum of its proper divisors (223075120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

141664640 is a wasteful number, since it uses less digits than its factorization.

141664640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17059 (or 17047 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 141664640 is about 11902.2955769045. The cubic root of 141664640 is about 521.2993148235.

The spelling of 141664640 in words is "one hundred forty-one million, six hundred sixty-four thousand, six hundred forty".