64920802 has 8 divisors (see below), whose sum is σ = 97494876. Its totient is φ = 32422512.

The previous prime is 64920799. The next prime is 64920803. The reversal of 64920802 is 20802946.

It can be written as a sum of positive squares in 2 ways, for example, as 62552281 + 2368521 = 7909^2 + 1539^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (64920803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16753 + ... + 20260.

Almost surely, 2^64920802 is an apocalyptic number.

64920802 is a deficient number, since it is larger than the sum of its proper divisors (32574074).

64920802 is a wasteful number, since it uses less digits than its factorization.

64920802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37892.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 64920802 is about 8057.3445998046. The cubic root of 64920802 is about 401.9092102918.

The spelling of 64920802 in words is "sixty-four million, nine hundred twenty thousand, eight hundred two".