64940552 has 8 divisors (see below), whose sum is σ = 121763550. Its totient is φ = 32470272.

The previous prime is 64940549. The next prime is 64940563. The reversal of 64940552 is 25504946.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 63266116 + 1674436 = 7954^2 + 1294^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4058777 + ... + 4058792.

Almost surely, 2^64940552 is an apocalyptic number.

It is an amenable number.

64940552 is a deficient number, since it is larger than the sum of its proper divisors (56822998).

64940552 is a wasteful number, since it uses less digits than its factorization.

64940552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8117575 (or 8117571 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 64940552 is about 8058.5700964873. The cubic root of 64940552 is about 401.9499620070.

The spelling of 64940552 in words is "sixty-four million, nine hundred forty thousand, five hundred fifty-two".