64574131 has 4 divisors (see below), whose sum is σ = 65537992. Its totient is φ = 63610272.

The previous prime is 64574129. The next prime is 64574149. The reversal of 64574131 is 13147546.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64574131 - 2¹ = 64574129 is a prime.

It is a super-2 number, since 2×64574131² = 8339636788810322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64574093 and 64574102.

It is not an unprimeable number, because it can be changed into a prime (64574171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 481830 + ... + 481963.

It is an arithmetic number, because the mean of its divisors is an integer number (16384498).

Almost surely, 2^64574131 is an apocalyptic number.

64574131 is a deficient number, since it is larger than the sum of its proper divisors (963861).

64574131 is an equidigital number, since it uses as much as digits as its factorization.

64574131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963860.

The product of its digits is 10080, while the sum is 31.

The square root of 64574131 is about 8035.8030712555. The cubic root of 64574131 is about 401.1925472940.

The spelling of 64574131 in words is "sixty-four million, five hundred seventy-four thousand, one hundred thirty-one".