64151040 has 80 divisors (see below), whose sum is σ = 205107408. Its totient is φ = 17104896.

The previous prime is 64151039. The next prime is 64151051. The reversal of 64151040 is 4015146.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 64150998 and 64151016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3504 + ... + 11856.

Almost surely, 2^64151040 is an apocalyptic number.

64151040 is a gapful number since it is divisible by the number (60) 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 64151040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102553704).

64151040 is an abundant number, since it is smaller than the sum of its proper divisors (140956368).

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

64151040 is an equidigital number, since it uses as much as digits as its factorization.

64151040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8379 (or 8363 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 64151040 is about 8009.4344369625. The cubic root of 64151040 is about 400.3144194529.

Adding to 64151040 its reverse (4015146), we get a palindrome (68166186).

It can be divided in two parts, 641 and 51040, that added together give a triangular number (51681 = T₃₂₁).

The spelling of 64151040 in words is "sixty-four million, one hundred fifty-one thousand, forty".