64950240 has 96 divisors (see below), whose sum is σ = 209018880. Its totient is φ = 16945664.

The previous prime is 64950203. The next prime is 64950247. The reversal of 64950240 is 4205946.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 64950198 and 64950207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64950247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21121 + ... + 23999.

It is an arithmetic number, because the mean of its divisors is an integer number (2177280).

Almost surely, 2^64950240 is an apocalyptic number.

64950240 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 64950240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104509440).

64950240 is an abundant number, since it is smaller than the sum of its proper divisors (144068640).

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

64950240 is a wasteful number, since it uses less digits than its factorization.

64950240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2944 (or 2936 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 64950240 is about 8059.1711732659. The cubic root of 64950240 is about 401.9699489925.

The spelling of 64950240 in words is "sixty-four million, nine hundred fifty thousand, two hundred forty".