663722037 has 24 divisors (see below), whose sum is σ = 1055477280. Its totient is φ = 398558880.

The previous prime is 663721991. The next prime is 663722057. The reversal of 663722037 is 730227366.

It is not a de Polignac number, because 663722037 - 2⁷ = 663721909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 663721992 and 663722010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663722057) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19963 + ... + 41544.

It is an arithmetic number, because the mean of its divisors is an integer number (43978220).

Almost surely, 2^663722037 is an apocalyptic number.

It is an amenable number.

663722037 is a deficient number, since it is larger than the sum of its proper divisors (391755243).

663722037 is a wasteful number, since it uses less digits than its factorization.

663722037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61633 (or 61630 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 36.

The square root of 663722037 is about 25762.8033606593. The cubic root of 663722037 is about 872.2923809295.

The spelling of 663722037 in words is "six hundred sixty-three million, seven hundred twenty-two thousand, thirty-seven".