972678173 has 2 divisors, whose sum is σ = 972678174. Its totient is φ = 972678172.

The previous prime is 972678143. The next prime is 972678181. The reversal of 972678173 is 371876279.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 926410969 + 46267204 = 30437^2 + 6802^2 .

It is a cyclic number.

It is not a de Polignac number, because 972678173 - 2¹⁰ = 972677149 is a prime.

It is a super-2 number, since 2×972678173² = 1892205656461235858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (972678143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486339086 + 486339087.

It is an arithmetic number, because the mean of its divisors is an integer number (486339087).

Almost surely, 2^972678173 is an apocalyptic number.

It is an amenable number.

972678173 is a deficient number, since it is larger than the sum of its proper divisors (1).

972678173 is an equidigital number, since it uses as much as digits as its factorization.

972678173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 889056, while the sum is 50.

The square root of 972678173 is about 31187.7888443538. The cubic root of 972678173 is about 990.8084994957.

The spelling of 972678173 in words is "nine hundred seventy-two million, six hundred seventy-eight thousand, one hundred seventy-three".