772474261 has 4 divisors (see below), whose sum is σ = 831895372. Its totient is φ = 713053152.

The previous prime is 772474223. The next prime is 772474273. The reversal of 772474261 is 162474277.

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

It can be written as a sum of positive squares in 2 ways, for example, as 221116900 + 551357361 = 14870^2 + 23481^2 .

It is a cyclic number.

It is not a de Polignac number, because 772474261 - 2⁷ = 772474133 is a prime.

It is a super-2 number, since 2×772474261² = 1193432967814992242, 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 (772474061) 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, 29710536 + ... + 29710561.

It is an arithmetic number, because the mean of its divisors is an integer number (207973843).

Almost surely, 2^772474261 is an apocalyptic number.

It is an amenable number.

772474261 is a deficient number, since it is larger than the sum of its proper divisors (59421111).

772474261 is a wasteful number, since it uses less digits than its factorization.

772474261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59421110.

The product of its digits is 131712, while the sum is 40.

The square root of 772474261 is about 27793.4211819992. The cubic root of 772474261 is about 917.5463371530.

The spelling of 772474261 in words is "seven hundred seventy-two million, four hundred seventy-four thousand, two hundred sixty-one".