64957340 has 96 divisors (see below), whose sum is σ = 168739200. Its totient is φ = 20923392.

The previous prime is 64957327. The next prime is 64957349. The reversal of 64957340 is 4375946.

It is a junction number, because it is equal to n+sod(n) for n = 64957294 and 64957303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64957349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116342 + ... + 116898.

It is an arithmetic number, because the mean of its divisors is an integer number (1757700).

Almost surely, 2^64957340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64957340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84369600).

64957340 is an abundant number, since it is smaller than the sum of its proper divisors (103781860).

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

64957340 is a wasteful number, since it uses less digits than its factorization.

64957340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604 (or 588 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 64957340 is about 8059.6116531754. The cubic root of 64957340 is about 401.9845955006.

The spelling of 64957340 in words is "sixty-four million, nine hundred fifty-seven thousand, three hundred forty".