77074660 has 24 divisors (see below), whose sum is σ = 174307896. Its totient is φ = 28458240.

The previous prime is 77074639. The next prime is 77074661. The reversal of 77074660 is 6647077.

It can be written as a sum of positive squares in 4 ways, for example, as 3526884 + 73547776 = 1878^2 + 8576^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (77074661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147961 + ... + 148480.

It is an arithmetic number, because the mean of its divisors is an integer number (7262829).

Almost surely, 2^77074660 is an apocalyptic number.

It is an amenable number.

77074660 is an abundant number, since it is smaller than the sum of its proper divisors (97233236).

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

77074660 is a wasteful number, since it uses less digits than its factorization.

77074660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296463 (or 296461 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 77074660 is about 8779.2175049944. The cubic root of 77074660 is about 425.5695432183.

The spelling of 77074660 in words is "seventy-seven million, seventy-four thousand, six hundred sixty".