77478076 has 24 divisors (see below), whose sum is σ = 152367264. Its totient is φ = 34203840.

The previous prime is 77478073. The next prime is 77478077. The reversal of 77478076 is 67087477.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77478073) 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, 31195 + ... + 33586.

It is an arithmetic number, because the mean of its divisors is an integer number (6348636).

Almost surely, 2^77478076 is an apocalyptic number.

It is an amenable number.

77478076 is a deficient number, since it is larger than the sum of its proper divisors (74889188).

77478076 is a wasteful number, since it uses less digits than its factorization.

77478076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64821 (or 64819 counting only the distinct ones).

The product of its (nonzero) digits is 460992, while the sum is 46.

The square root of 77478076 is about 8802.1631432279. The cubic root of 77478076 is about 426.3107418532.

The spelling of 77478076 in words is "seventy-seven million, four hundred seventy-eight thousand, seventy-six".