772161370 has 8 divisors (see below), whose sum is σ = 1389890484. Its totient is φ = 308864544.

The previous prime is 772161353. The next prime is 772161373. The reversal of 772161370 is 73161277.

It can be written as a sum of positive squares in 2 ways, for example, as 696801609 + 75359761 = 26397^2 + 8681^2 .

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

It is not an unprimeable number, because it can be changed into a prime (772161373) 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, 38608059 + ... + 38608078.

Almost surely, 2^772161370 is an apocalyptic number.

772161370 is a deficient number, since it is larger than the sum of its proper divisors (617729114).

772161370 is a wasteful number, since it uses less digits than its factorization.

772161370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77216144.

The product of its (nonzero) digits is 12348, while the sum is 34.

The square root of 772161370 is about 27787.7917438576. The cubic root of 772161370 is about 917.4224362558.

The spelling of 772161370 in words is "seven hundred seventy-two million, one hundred sixty-one thousand, three hundred seventy".