77770706 has 16 divisors (see below), whose sum is σ = 125775384. Its totient is φ = 35852544.

The previous prime is 77770691. The next prime is 77770709. The reversal of 77770706 is 60707777.

It can be written as a sum of positive squares in 4 ways, for example, as 18619225 + 59151481 = 4315^2 + 7691^2 .

It is not an unprimeable number, because it can be changed into a prime (77770709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40586 + ... + 42458.

Almost surely, 2^77770706 is an apocalyptic number.

77770706 is a deficient number, since it is larger than the sum of its proper divisors (48004678).

77770706 is a wasteful number, since it uses less digits than its factorization.

77770706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3485.

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

The square root of 77770706 is about 8818.7700956539. The cubic root of 77770706 is about 426.8467841686.

The spelling of 77770706 in words is "seventy-seven million, seven hundred seventy thousand, seven hundred six".