77265730 has 32 divisors (see below), whose sum is σ = 143337600. Its totient is φ = 29969280.

The previous prime is 77265719. The next prime is 77265739. The reversal of 77265730 is 3756277.

It is a self number, because there is not a number n which added to its sum of digits gives 77265730.

It is not an unprimeable number, because it can be changed into a prime (77265739) 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, 81117 + ... + 82063.

It is an arithmetic number, because the mean of its divisors is an integer number (4479300).

Almost surely, 2^77265730 is an apocalyptic number.

77265730 is a deficient number, since it is larger than the sum of its proper divisors (66071870).

77265730 is a wasteful number, since it uses less digits than its factorization.

77265730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194.

The product of its (nonzero) digits is 61740, while the sum is 37.

The square root of 77265730 is about 8790.0927185099. The cubic root of 77265730 is about 425.9209188508.

It can be divided in two parts, 7726 and 5730, that added together give a square (13456 = 116²).

The spelling of 77265730 in words is "seventy-seven million, two hundred sixty-five thousand, seven hundred thirty".