172016977 has 8 divisors (see below), whose sum is σ = 195814080. Its totient is φ = 149579760.

The previous prime is 172016969. The next prime is 172016983. The reversal of 172016977 is 779610271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 172016977 - 2³ = 172016969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172016917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339702 + ... + 340207.

It is an arithmetic number, because the mean of its divisors is an integer number (24476760).

Almost surely, 2^172016977 is an apocalyptic number.

It is an amenable number.

172016977 is a deficient number, since it is larger than the sum of its proper divisors (23797103).

172016977 is a wasteful number, since it uses less digits than its factorization.

172016977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679943.

The product of its (nonzero) digits is 37044, while the sum is 40.

The square root of 172016977 is about 13115.5242746907. The cubic root of 172016977 is about 556.1480733665.

The spelling of 172016977 in words is "one hundred seventy-two million, sixteen thousand, nine hundred seventy-seven".