172654668 has 18 divisors (see below), whose sum is σ = 436432724. Its totient is φ = 57551544.

The previous prime is 172654667. The next prime is 172654673. The reversal of 172654668 is 866456271.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (172654663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2397946 + ... + 2398017.

Almost surely, 2^172654668 is an apocalyptic number.

172654668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

172654668 is an abundant number, since it is smaller than the sum of its proper divisors (263778056).

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

172654668 is a wasteful number, since it uses less digits than its factorization.

172654668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4795973 (or 4795968 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 172654668 is about 13139.8123274269. The cubic root of 172654668 is about 556.8344654523.

The spelling of 172654668 in words is "one hundred seventy-two million, six hundred fifty-four thousand, six hundred sixty-eight".