632621020 has 24 divisors (see below), whose sum is σ = 1344513744. Its totient is φ = 249998976.

The previous prime is 632620969. The next prime is 632621027. The reversal of 632621020 is 20126236.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 632620982 and 632621000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (632621027) 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, 188889 + ... + 192208.

It is an arithmetic number, because the mean of its divisors is an integer number (56021406).

Almost surely, 2^632621020 is an apocalyptic number.

It is an amenable number.

632621020 is an abundant number, since it is smaller than the sum of its proper divisors (711892724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

632621020 is a wasteful number, since it uses less digits than its factorization.

632621020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381189 (or 381187 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 632621020 is about 25151.9585718488. The cubic root of 632621020 is about 858.4490796455.

Adding to 632621020 its reverse (20126236), we get a palindrome (652747256).

The spelling of 632621020 in words is "six hundred thirty-two million, six hundred twenty-one thousand, twenty".