77740268 has 6 divisors (see below), whose sum is σ = 136045476. Its totient is φ = 38870132.

The previous prime is 77740211. The next prime is 77740279. The reversal of 77740268 is 86204777.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9717530 + ... + 9717537.

It is an arithmetic number, because the mean of its divisors is an integer number (22674246).

Almost surely, 2^77740268 is an apocalyptic number.

It is an amenable number.

77740268 is a deficient number, since it is larger than the sum of its proper divisors (58305208).

77740268 is a wasteful number, since it uses less digits than its factorization.

77740268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19435071 (or 19435069 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 41.

The square root of 77740268 is about 8817.0441759129. The cubic root of 77740268 is about 426.7910902857.

The spelling of 77740268 in words is "seventy-seven million, seven hundred forty thousand, two hundred sixty-eight".