64697948 has 24 divisors (see below), whose sum is σ = 131840352. Its totient is φ = 27203904.

The previous prime is 64697921. The next prime is 64697957. The reversal of 64697948 is 84979646.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a self number, because there is not a number n which added to its sum of digits gives 64697948.

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, 20315 + ... + 23282.

It is an arithmetic number, because the mean of its divisors is an integer number (5493348).

Almost surely, 2^64697948 is an apocalyptic number.

It is an amenable number.

64697948 is an abundant number, since it is smaller than the sum of its proper divisors (67142404).

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

64697948 is a wasteful number, since it uses less digits than its factorization.

64697948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43661 (or 43659 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 53.

The square root of 64697948 is about 8043.5034655304. The cubic root of 64697948 is about 401.4488044122.

The spelling of 64697948 in words is "sixty-four million, six hundred ninety-seven thousand, nine hundred forty-eight".