771772730 has 16 divisors (see below), whose sum is σ = 1389657384. Its totient is φ = 308605440.

The previous prime is 771772721. The next prime is 771772787. The reversal of 771772730 is 37277177.

It can be written as a sum of positive squares in 4 ways, for example, as 341251729 + 430521001 = 18473^2 + 20749^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23090 + ... + 45570.

Almost surely, 2^771772730 is an apocalyptic number.

771772730 is a deficient number, since it is larger than the sum of its proper divisors (617884654).

771772730 is a wasteful number, since it uses less digits than its factorization.

771772730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25921.

The product of its (nonzero) digits is 100842, while the sum is 41.

The square root of 771772730 is about 27780.7978647122. The cubic root of 771772730 is about 917.2684930929.

The spelling of 771772730 in words is "seven hundred seventy-one million, seven hundred seventy-two thousand, seven hundred thirty".