64798905 has 32 divisors (see below), whose sum is σ = 107976960. Its totient is φ = 33143040.

The previous prime is 64798891. The next prime is 64798919. The reversal of 64798905 is 50989746.

It is an interprime number because it is at equal distance from previous prime (64798891) and next prime (64798919).

It is not a de Polignac number, because 64798905 - 2¹⁰ = 64797881 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78324 + ... + 79146.

It is an arithmetic number, because the mean of its divisors is an integer number (3374280).

Almost surely, 2^64798905 is an apocalyptic number.

It is an amenable number.

64798905 is a deficient number, since it is larger than the sum of its proper divisors (43178055).

64798905 is a wasteful number, since it uses less digits than its factorization.

64798905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041.

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 64798905 is about 8049.7767049776. The cubic root of 64798905 is about 401.6575076011.

It can be divided in two parts, 64798 and 905, that added together give a triangular number (65703 = T₃₆₂).

The spelling of 64798905 in words is "sixty-four million, seven hundred ninety-eight thousand, nine hundred five".