77770652 has 12 divisors (see below), whose sum is σ = 138130440. Its totient is φ = 38304816.

The previous prime is 77770621. The next prime is 77770657. The reversal of 77770652 is 25607777.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77770657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144827 + ... + 145362.

It is an arithmetic number, because the mean of its divisors is an integer number (11510870).

Almost surely, 2^77770652 is an apocalyptic number.

It is an amenable number.

77770652 is a deficient number, since it is larger than the sum of its proper divisors (60359788).

77770652 is a wasteful number, since it uses less digits than its factorization.

77770652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290260 (or 290258 counting only the distinct ones).

The product of its (nonzero) digits is 144060, while the sum is 41.

The square root of 77770652 is about 8818.7670340020. The cubic root of 77770652 is about 426.8466853750.

The spelling of 77770652 in words is "seventy-seven million, seven hundred seventy thousand, six hundred fifty-two".