633166440 has 32 divisors (see below), whose sum is σ = 1899499680. Its totient is φ = 168844352.

The previous prime is 633166439. The next prime is 633166463. The reversal of 633166440 is 44661336.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2638074 + ... + 2638313.

It is an arithmetic number, because the mean of its divisors is an integer number (59359365).

Almost surely, 2^633166440 is an apocalyptic number.

633166440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

633166440 is an abundant number, since it is smaller than the sum of its proper divisors (1266333240).

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

633166440 is a wasteful number, since it uses less digits than its factorization.

633166440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5276401 (or 5276397 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 33.

The square root of 633166440 is about 25162.7987314607. The cubic root of 633166440 is about 858.6957153552.

It can be divided in two parts, 6331 and 66440, that added together give a triangular number (72771 = T₃₈₁).

The spelling of 633166440 in words is "six hundred thirty-three million, one hundred sixty-six thousand, four hundred forty".