172680774 has 16 divisors (see below), whose sum is σ = 394699008. Its totient is φ = 49337352.

The previous prime is 172680769. The next prime is 172680779. The reversal of 172680774 is 477086271.

It is an interprime number because it is at equal distance from previous prime (172680769) and next prime (172680779).

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 4111447 = 172680774 / (1 + 7 + 2 + 6 + 8 + 0 + 7 + 7 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172680779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2055682 + ... + 2055765.

It is an arithmetic number, because the mean of its divisors is an integer number (24668688).

Almost surely, 2^172680774 is an apocalyptic number.

172680774 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

172680774 is an abundant number, since it is smaller than the sum of its proper divisors (222018234).

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

172680774 is a wasteful number, since it uses less digits than its factorization.

172680774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4111459.

The product of its (nonzero) digits is 131712, while the sum is 42.

The square root of 172680774 is about 13140.8056830622. The cubic root of 172680774 is about 556.8625291552.

The spelling of 172680774 in words is "one hundred seventy-two million, six hundred eighty thousand, seven hundred seventy-four".