772170923 has 16 divisors (see below), whose sum is σ = 827464896. Its totient is φ = 718018560.

The previous prime is 772170901. The next prime is 772170929. The reversal of 772170923 is 329071277.

It is a cyclic number.

It is not a de Polignac number, because 772170923 - 2⁸ = 772170667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (772170929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1038890 + ... + 1039632.

It is an arithmetic number, because the mean of its divisors is an integer number (51716556).

Almost surely, 2^772170923 is an apocalyptic number.

772170923 is a deficient number, since it is larger than the sum of its proper divisors (55293973).

772170923 is a wasteful number, since it uses less digits than its factorization.

772170923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414.

The product of its (nonzero) digits is 37044, while the sum is 38.

The square root of 772170923 is about 27787.9636353584. The cubic root of 772170923 is about 917.4262196188.

The spelling of 772170923 in words is "seven hundred seventy-two million, one hundred seventy thousand, nine hundred twenty-three".