77425706 has 4 divisors (see below), whose sum is σ = 116138562. Its totient is φ = 38712852.

The previous prime is 77425697. The next prime is 77425717. The reversal of 77425706 is 60752477.

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

It can be written as a sum of positive squares in only one way, i.e., 71250481 + 6175225 = 8441^2 + 2485^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 77425706.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 19356425 + ... + 19356428.

Almost surely, 2^77425706 is an apocalyptic number.

77425706 is a deficient number, since it is larger than the sum of its proper divisors (38712856).

77425706 is a wasteful number, since it uses less digits than its factorization.

77425706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38712855.

The product of its (nonzero) digits is 82320, while the sum is 38.

The square root of 77425706 is about 8799.1878034282. The cubic root of 77425706 is about 426.2146676825.

The spelling of 77425706 in words is "seventy-seven million, four hundred twenty-five thousand, seven hundred six".