170672961 has 4 divisors (see below), whose sum is σ = 227563952. Its totient is φ = 113781972.

The previous prime is 170672959. The next prime is 170673001. The reversal of 170672961 is 169276071.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 170672961 - 2¹ = 170672959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (170672261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28445491 + ... + 28445496.

It is an arithmetic number, because the mean of its divisors is an integer number (56890988).

Almost surely, 2^170672961 is an apocalyptic number.

It is an amenable number.

170672961 is a deficient number, since it is larger than the sum of its proper divisors (56890991).

170672961 is an equidigital number, since it uses as much as digits as its factorization.

170672961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56890990.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 170672961 is about 13064.1861973871. The cubic root of 170672961 is about 554.6958385326.

The spelling of 170672961 in words is "one hundred seventy million, six hundred seventy-two thousand, nine hundred sixty-one".