64974133 has 4 divisors (see below), whose sum is σ = 74256160. Its totient is φ = 55692108.

The previous prime is 64974127. The next prime is 64974139. The reversal of 64974133 is 33147946.

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 an interprime number because it is at equal distance from previous prime (64974127) and next prime (64974139).

It is a cyclic number.

It is not a de Polignac number, because 64974133 - 2⁵ = 64974101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64974092 and 64974101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64974139) 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, 4641003 + ... + 4641016.

It is an arithmetic number, because the mean of its divisors is an integer number (18564040).

Almost surely, 2^64974133 is an apocalyptic number.

It is an amenable number.

64974133 is a deficient number, since it is larger than the sum of its proper divisors (9282027).

64974133 is an equidigital number, since it uses as much as digits as its factorization.

64974133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9282026.

The product of its digits is 54432, while the sum is 37.

The square root of 64974133 is about 8060.6533854273. The cubic root of 64974133 is about 402.0192333397.

The spelling of 64974133 in words is "sixty-four million, nine hundred seventy-four thousand, one hundred thirty-three".