64772001 has 32 divisors (see below), whose sum is σ = 110073600. Its totient is φ = 36875520.

The previous prime is 64771997. The next prime is 64772003. The reversal of 64772001 is 10027746.

It is not a de Polignac number, because 64772001 - 2² = 64771997 is a prime.

It is a super-2 number, since 2×64772001² = 8390824227088002, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64772003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73081 + ... + 73961.

It is an arithmetic number, because the mean of its divisors is an integer number (3439800).

Almost surely, 2^64772001 is an apocalyptic number.

It is an amenable number.

64772001 is a deficient number, since it is larger than the sum of its proper divisors (45301599).

64772001 is a wasteful number, since it uses less digits than its factorization.

64772001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286 (or 1280 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 64772001 is about 8048.1054292299. The cubic root of 64772001 is about 401.6019115512.

Adding to 64772001 its reverse (10027746), we get a palindrome (74799747).

The spelling of 64772001 in words is "sixty-four million, seven hundred seventy-two thousand, one".