77447346 has 16 divisors (see below), whose sum is σ = 155084544. Its totient is φ = 25784144.

The previous prime is 77447341. The next prime is 77447347. The reversal of 77447346 is 64374477.

It is a junction number, because it is equal to n+sod(n) for n = 77447298 and 77447307.

It is not an unprimeable number, because it can be changed into a prime (77447341) 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, 2301 + ... + 12656.

It is an arithmetic number, because the mean of its divisors is an integer number (9692784).

Almost surely, 2^77447346 is an apocalyptic number.

77447346 is an abundant number, since it is smaller than the sum of its proper divisors (77637198).

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

77447346 is a wasteful number, since it uses less digits than its factorization.

77447346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15825.

The product of its digits is 395136, while the sum is 42.

The square root of 77447346 is about 8800.4173764657. The cubic root of 77447346 is about 426.2543720939.

The spelling of 77447346 in words is "seventy-seven million, four hundred forty-seven thousand, three hundred forty-six".