64894697 has 16 divisors (see below), whose sum is σ = 76403712. Its totient is φ = 53963280.

The previous prime is 64894693. The next prime is 64894703. The reversal of 64894697 is 79649846.

It is a happy number.

It is not a de Polignac number, because 64894697 - 2² = 64894693 is a prime.

It is a super-2 number, since 2×64894697² = 8422643397443618, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64894691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49622 + ... + 50912.

It is an arithmetic number, because the mean of its divisors is an integer number (4775232).

Almost surely, 2^64894697 is an apocalyptic number.

It is an amenable number.

64894697 is a deficient number, since it is larger than the sum of its proper divisors (11509015).

64894697 is a wasteful number, since it uses less digits than its factorization.

64894697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508.

The product of its digits is 2612736, while the sum is 53.

The square root of 64894697 is about 8055.7244863513. The cubic root of 64894697 is about 401.8553331255.

The spelling of 64894697 in words is "sixty-four million, eight hundred ninety-four thousand, six hundred ninety-seven".