64505828 has 6 divisors (see below), whose sum is σ = 112885206. Its totient is φ = 32252912.

The previous prime is 64505809. The next prime is 64505851. The reversal of 64505828 is 82850546.

It can be written as a sum of positive squares in only one way, i.e., 44863204 + 19642624 = 6698^2 + 4432^2 .

It is a super-2 number, since 2×64505828² = 8322003691931168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64505791 and 64505800.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8063225 + ... + 8063232.

It is an arithmetic number, because the mean of its divisors is an integer number (18814201).

Almost surely, 2^64505828 is an apocalyptic number.

It is an amenable number.

64505828 is a deficient number, since it is larger than the sum of its proper divisors (48379378).

64505828 is a wasteful number, since it uses less digits than its factorization.

64505828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16126461 (or 16126459 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 38.

The square root of 64505828 is about 8031.5520293403. The cubic root of 64505828 is about 401.0510441797.

The spelling of 64505828 in words is "sixty-four million, five hundred five thousand, eight hundred twenty-eight".