64623802 has 4 divisors (see below), whose sum is σ = 96935706. Its totient is φ = 32311900.

The previous prime is 64623791. The next prime is 64623829. The reversal of 64623802 is 20832646.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 36012001 + 28611801 = 6001^2 + 5349^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16155949 + ... + 16155952.

Almost surely, 2^64623802 is an apocalyptic number.

64623802 is a deficient number, since it is larger than the sum of its proper divisors (32311904).

64623802 is a wasteful number, since it uses less digits than its factorization.

64623802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32311903.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 64623802 is about 8038.8930830059. The cubic root of 64623802 is about 401.2953878970.

The spelling of 64623802 in words is "sixty-four million, six hundred twenty-three thousand, eight hundred two".