77713727 has 16 divisors (see below), whose sum is σ = 98236992. Its totient is φ = 59823360.

The previous prime is 77713723. The next prime is 77713729. The reversal of 77713727 is 72731777.

It is a cyclic number.

It is not a de Polignac number, because 77713727 - 2² = 77713723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77713721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8174 + ... + 14907.

It is an arithmetic number, because the mean of its divisors is an integer number (6139812).

Almost surely, 2^77713727 is an apocalyptic number.

77713727 is a deficient number, since it is larger than the sum of its proper divisors (20523265).

77713727 is a wasteful number, since it uses less digits than its factorization.

77713727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23138.

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

The square root of 77713727 is about 8815.5389511929. The cubic root of 77713727 is about 426.7425150665.

The spelling of 77713727 in words is "seventy-seven million, seven hundred thirteen thousand, seven hundred twenty-seven".