77266772 has 12 divisors (see below), whose sum is σ = 147509376. Its totient is φ = 35121240.

The previous prime is 77266771. The next prime is 77266823. The reversal of 77266772 is 27766277.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 1756063 = 77266772 / (7 + 7 + 2 + 6 + 6 + 7 + 7 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77266771) 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, 877988 + ... + 878075.

It is an arithmetic number, because the mean of its divisors is an integer number (12292448).

Almost surely, 2^77266772 is an apocalyptic number.

It is an amenable number.

77266772 is a deficient number, since it is larger than the sum of its proper divisors (70242604).

77266772 is a wasteful number, since it uses less digits than its factorization.

77266772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1756078 (or 1756076 counting only the distinct ones).

The product of its digits is 345744, while the sum is 44.

The square root of 77266772 is about 8790.1519895847. The cubic root of 77266772 is about 425.9228334883.

The spelling of 77266772 in words is "seventy-seven million, two hundred sixty-six thousand, seven hundred seventy-two".