64253810 has 8 divisors (see below), whose sum is σ = 115656876. Its totient is φ = 25701520.

The previous prime is 64253803. The next prime is 64253831. The reversal of 64253810 is 1835246.

It can be written as a sum of positive squares in 2 ways, for example, as 58782889 + 5470921 = 7667^2 + 2339^2 .

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

It is a super-2 number, since 2×64253810² = 8257104199032200, which contains 22 as substring.

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, 3212681 + ... + 3212700.

Almost surely, 2^64253810 is an apocalyptic number.

64253810 is a deficient number, since it is larger than the sum of its proper divisors (51403066).

64253810 is a wasteful number, since it uses less digits than its factorization.

64253810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6425388.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 64253810 is about 8015.8474286877. The cubic root of 64253810 is about 400.5280733728.

The spelling of 64253810 in words is "sixty-four million, two hundred fifty-three thousand, eight hundred ten".