64486031 has 4 divisors (see below), whose sum is σ = 64791864. Its totient is φ = 64180200.

The previous prime is 64486007. The next prime is 64486061. The reversal of 64486031 is 13068446.

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 64486031 - 2¹⁰ = 64485007 is a prime.

It is a super-2 number, since 2×64486031² = 8316896388265922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64486061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152600 + ... + 153021.

It is an arithmetic number, because the mean of its divisors is an integer number (16197966).

Almost surely, 2^64486031 is an apocalyptic number.

64486031 is a deficient number, since it is larger than the sum of its proper divisors (305833).

64486031 is a wasteful number, since it uses less digits than its factorization.

64486031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305832.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 64486031 is about 8030.3194830592. The cubic root of 64486031 is about 401.0100121256.

The spelling of 64486031 in words is "sixty-four million, four hundred eighty-six thousand, thirty-one".