64624001 has 8 divisors (see below), whose sum is σ = 69663720. Its totient is φ = 59594112.

The previous prime is 64623991. The next prime is 64624009. The reversal of 64624001 is 10042646.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 303601 + 64320400 = 551^2 + 8020^2 .

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 64624001 - 2¹⁰ = 64622977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64624009) 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, 16895 + ... + 20363.

It is an arithmetic number, because the mean of its divisors is an integer number (8707965).

Almost surely, 2^64624001 is an apocalyptic number.

It is an amenable number.

64624001 is a deficient number, since it is larger than the sum of its proper divisors (5039719).

64624001 is a wasteful number, since it uses less digits than its factorization.

64624001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4915.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 64624001 is about 8038.9054603223. The cubic root of 64624001 is about 401.2957998076.

Adding to 64624001 its reverse (10042646), we get a palindrome (74666647).

The spelling of 64624001 in words is "sixty-four million, six hundred twenty-four thousand, one".