77420313 has 16 divisors (see below), whose sum is σ = 115035840. Its totient is φ = 51460992.

The previous prime is 77420297. The next prime is 77420347. The reversal of 77420313 is 31302477.

It is not a de Polignac number, because 77420313 - 2⁴ = 77420297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (77420713) 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, 5470 + ... + 13592.

It is an arithmetic number, because the mean of its divisors is an integer number (7189740).

Almost surely, 2^77420313 is an apocalyptic number.

It is an amenable number.

77420313 is a deficient number, since it is larger than the sum of its proper divisors (37615527).

77420313 is a wasteful number, since it uses less digits than its factorization.

77420313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8485 (or 8479 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 77420313 is about 8798.8813493535. The cubic root of 77420313 is about 426.2047716191.

The spelling of 77420313 in words is "seventy-seven million, four hundred twenty thousand, three hundred thirteen".