64734489 has 12 divisors (see below), whose sum is σ = 97571136. Its totient is φ = 41279832.

The previous prime is 64734457. The next prime is 64734499. The reversal of 64734489 is 98443746.

It is not a de Polignac number, because 64734489 - 2⁵ = 64734457 is a prime.

It is a super-2 number, since 2×64734489² = 8381108132182242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64734499) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156157 + ... + 156570.

It is an arithmetic number, because the mean of its divisors is an integer number (8130928).

Almost surely, 2^64734489 is an apocalyptic number.

64734489 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

64734489 is a deficient number, since it is larger than the sum of its proper divisors (32836647).

64734489 is a wasteful number, since it uses less digits than its factorization.

64734489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312756 (or 312753 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 64734489 is about 8045.7746053441. The cubic root of 64734489 is about 401.5243687866.

The spelling of 64734489 in words is "sixty-four million, seven hundred thirty-four thousand, four hundred eighty-nine".