64630837 has 8 divisors (see below), whose sum is σ = 68443200. Its totient is φ = 60859584.

The previous prime is 64630831. The next prime is 64630847. The reversal of 64630837 is 73803646.

It is a happy number.

64630837 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a de Polignac number, because none of the positive numbers 2^k-64630837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64630796 and 64630805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64630831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7012 + ... + 13357.

It is an arithmetic number, because the mean of its divisors is an integer number (8555400).

Almost surely, 2^64630837 is an apocalyptic number.

It is an amenable number.

64630837 is a deficient number, since it is larger than the sum of its proper divisors (3812363).

64630837 is a wasteful number, since it uses less digits than its factorization.

64630837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20555.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 64630837 is about 8039.3306313399. The cubic root of 64630837 is about 401.3099491501.

The spelling of 64630837 in words is "sixty-four million, six hundred thirty thousand, eight hundred thirty-seven".