172077671 has 4 divisors (see below), whose sum is σ = 173748432. Its totient is φ = 170406912.

The previous prime is 172077629. The next prime is 172077679. The reversal of 172077671 is 176770271.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 172077671 - 2¹⁰ = 172076647 is a prime.

It is a super-2 number, since 2×172077671² = 59221449713568482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172077679) 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 3 ways as a sum of consecutive naturals, for example, 835226 + ... + 835431.

It is an arithmetic number, because the mean of its divisors is an integer number (43437108).

Almost surely, 2^172077671 is an apocalyptic number.

172077671 is a deficient number, since it is larger than the sum of its proper divisors (1670761).

172077671 is a wasteful number, since it uses less digits than its factorization.

172077671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670760.

The product of its (nonzero) digits is 28812, while the sum is 38.

The square root of 172077671 is about 13117.8378934945. The cubic root of 172077671 is about 556.2134755970.

The spelling of 172077671 in words is "one hundred seventy-two million, seventy-seven thousand, six hundred seventy-one".