64798605 has 12 divisors (see below), whose sum is σ = 112317660. Its totient is φ = 34559232.

The previous prime is 64798583. The next prime is 64798633. The reversal of 64798605 is 50689746.

It can be written as a sum of positive squares in 2 ways, for example, as 9400356 + 55398249 = 3066^2 + 7443^2 .

It is not a de Polignac number, because 64798605 - 2⁶ = 64798541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1439969 = 64798605 / (6 + 4 + 7 + 9 + 8 + 6 + 0 + 5).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 719940 + ... + 720029.

It is an arithmetic number, because the mean of its divisors is an integer number (9359805).

Almost surely, 2^64798605 is an apocalyptic number.

It is an amenable number.

64798605 is a deficient number, since it is larger than the sum of its proper divisors (47519055).

64798605 is a wasteful number, since it uses less digits than its factorization.

64798605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439980 (or 1439977 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 64798605 is about 8049.7580708988. The cubic root of 64798605 is about 401.6568877479.

The spelling of 64798605 in words is "sixty-four million, seven hundred ninety-eight thousand, six hundred five".