77616740 has 24 divisors (see below), whose sum is σ = 166465152. Its totient is φ = 30385760.

The previous prime is 77616733. The next prime is 77616779. The reversal of 77616740 is 4761677.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 77616694 and 77616703.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40346 + ... + 42225.

It is an arithmetic number, because the mean of its divisors is an integer number (6936048).

Almost surely, 2^77616740 is an apocalyptic number.

It is an amenable number.

77616740 is an abundant number, since it is smaller than the sum of its proper divisors (88848412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77616740 is a wasteful number, since it uses less digits than its factorization.

77616740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82627 (or 82625 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 77616740 is about 8810.0363222861. The cubic root of 77616740 is about 426.5649157864.

The spelling of 77616740 in words is "seventy-seven million, six hundred sixteen thousand, seven hundred forty".