64773938 has 8 divisors (see below), whose sum is σ = 97215132. Its totient is φ = 32368896.

The previous prime is 64773913. The next prime is 64773941. The reversal of 64773938 is 83937746.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 62932489 + 1841449 = 7933^2 + 1357^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 64773892 and 64773901.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3995 + ... + 12062.

Almost surely, 2^64773938 is an apocalyptic number.

64773938 is a deficient number, since it is larger than the sum of its proper divisors (32441194).

64773938 is a wasteful number, since it uses less digits than its factorization.

64773938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18076.

The product of its digits is 762048, while the sum is 47.

The square root of 64773938 is about 8048.2257672111. The cubic root of 64773938 is about 401.6059147992.

The spelling of 64773938 in words is "sixty-four million, seven hundred seventy-three thousand, nine hundred thirty-eight".