64746553 has 4 divisors (see below), whose sum is σ = 64769680. Its totient is φ = 64723428.

The previous prime is 64746551. The next prime is 64746581. The reversal of 64746553 is 35564746.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64746553 - 2¹ = 64746551 is a prime.

It is a super-2 number, since 2×64746553² = 8384232250763618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64746551) 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 3 ways as a sum of consecutive naturals, for example, 6675 + ... + 13192.

It is an arithmetic number, because the mean of its divisors is an integer number (16192420).

Almost surely, 2^64746553 is an apocalyptic number.

It is an amenable number.

64746553 is a deficient number, since it is larger than the sum of its proper divisors (23127).

64746553 is a wasteful number, since it uses less digits than its factorization.

64746553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23126.

The product of its digits is 302400, while the sum is 40.

The square root of 64746553 is about 8046.5242807065. The cubic root of 64746553 is about 401.5493100978.

The spelling of 64746553 in words is "sixty-four million, seven hundred forty-six thousand, five hundred fifty-three".