64854677 has 4 divisors (see below), whose sum is σ = 68669676. Its totient is φ = 61039680.

The previous prime is 64854667. The next prime is 64854679. The reversal of 64854677 is 77645846.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 55860676 + 8994001 = 7474^2 + 2999^2 .

It is a cyclic number.

It is not a de Polignac number, because 64854677 - 2¹⁰ = 64853653 is a prime.

It is a super-2 number, since 2×64854677² = 8412258257548658, 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 (64854679) 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, 1907474 + ... + 1907507.

It is an arithmetic number, because the mean of its divisors is an integer number (17167419).

Almost surely, 2^64854677 is an apocalyptic number.

It is an amenable number.

64854677 is a deficient number, since it is larger than the sum of its proper divisors (3814999).

64854677 is a wasteful number, since it uses less digits than its factorization.

64854677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3814998.

The product of its digits is 1128960, while the sum is 47.

The square root of 64854677 is about 8053.2401553660. The cubic root of 64854677 is about 401.7727092326.

The spelling of 64854677 in words is "sixty-four million, eight hundred fifty-four thousand, six hundred seventy-seven".