64572949 has 8 divisors (see below), whose sum is σ = 73969280. Its totient is φ = 55219536.

The previous prime is 64572947. The next prime is 64572961. The reversal of 64572949 is 94927546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64572949 - 2¹ = 64572947 is a prime.

It is a super-4 number, since 4×64572949⁴ (a number of 32 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64572899 and 64572908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64572943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7434 + ... + 13579.

It is an arithmetic number, because the mean of its divisors is an integer number (9246160).

Almost surely, 2^64572949 is an apocalyptic number.

It is an amenable number.

64572949 is a deficient number, since it is larger than the sum of its proper divisors (9396331).

64572949 is a wasteful number, since it uses less digits than its factorization.

64572949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21459.

The product of its digits is 544320, while the sum is 46.

The square root of 64572949 is about 8035.7295250649. The cubic root of 64572949 is about 401.1900993969.

The spelling of 64572949 in words is "sixty-four million, five hundred seventy-two thousand, nine hundred forty-nine".