632874649 has 9 divisors (see below), whose sum is σ = 695943381. Its totient is φ = 575089020.

The previous prime is 632874631. The next prime is 632874653. The reversal of 632874649 is 946478236.

The square root of 632874649 is 25157.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 632874649 - 2¹¹ = 632872601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (632874659) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 275584 + ... + 277870.

Almost surely, 2^632874649 is an apocalyptic number.

632874649 is the 25157-th square number.

632874649 is the 12579-th centered octagonal number.

It is an amenable number.

632874649 is a deficient number, since it is larger than the sum of its proper divisors (63068732).

632874649 is an frugal number, since it uses more digits than its factorization.

632874649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4596 (or 2298 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 49.

The cubic root of 632874649 is about 858.5637868104.

Multiplying 632874649 by its sum of digits (49), we get a square (31010857801 = 176099²).

The spelling of 632874649 in words is "six hundred thirty-two million, eight hundred seventy-four thousand, six hundred forty-nine".