772313405 has 4 divisors (see below), whose sum is σ = 926776092. Its totient is φ = 617850720.

The previous prime is 772313369. The next prime is 772313407. The reversal of 772313405 is 504313277.

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 432390436 + 339922969 = 20794^2 + 18437^2 .

It is not a de Polignac number, because 772313405 - 2⁸ = 772313149 is a prime.

It is a super-3 number, since 3×772313405³ (a number of 28 digits) contains 333 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 (772313407) 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, 77231336 + ... + 77231345.

It is an arithmetic number, because the mean of its divisors is an integer number (231694023).

Almost surely, 2^772313405 is an apocalyptic number.

It is an amenable number.

772313405 is a deficient number, since it is larger than the sum of its proper divisors (154462687).

772313405 is a wasteful number, since it uses less digits than its factorization.

772313405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154462686.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 772313405 is about 27790.5272530048. The cubic root of 772313405 is about 917.4826443816.

The spelling of 772313405 in words is "seven hundred seventy-two million, three hundred thirteen thousand, four hundred five".