172664340 has 48 divisors (see below), whose sum is σ = 485923200. Its totient is φ = 45809280.

The previous prime is 172664299. The next prime is 172664353. The reversal of 172664340 is 43466271.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4710 + ... + 19170.

It is an arithmetic number, because the mean of its divisors is an integer number (10123400).

Almost surely, 2^172664340 is an apocalyptic number.

172664340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172664340 is an abundant number, since it is smaller than the sum of its proper divisors (313258860).

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

172664340 is a wasteful number, since it uses less digits than its factorization.

172664340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14672 (or 14670 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 172664340 is about 13140.1803640589. The cubic root of 172664340 is about 556.8448630906.

It can be divided in two parts, 1726 and 64340, that added together give a palindrome (66066).

The spelling of 172664340 in words is "one hundred seventy-two million, six hundred sixty-four thousand, three hundred forty".