771425906 has 8 divisors (see below), whose sum is σ = 1185361884. Its totient is φ = 376305280.

The previous prime is 771425903. The next prime is 771425989. The reversal of 771425906 is 609524177.

It can be written as a sum of positive squares in 2 ways, for example, as 730350625 + 41075281 = 27025^2 + 6409^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (771425903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4703735 + ... + 4703898.

Almost surely, 2^771425906 is an apocalyptic number.

771425906 is a deficient number, since it is larger than the sum of its proper divisors (413935978).

771425906 is a wasteful number, since it uses less digits than its factorization.

771425906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9407676.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 771425906 is about 27774.5550099367. Note that the first 3 decimals coincide. The cubic root of 771425906 is about 917.1310699103.

The spelling of 771425906 in words is "seven hundred seventy-one million, four hundred twenty-five thousand, nine hundred six".