77406906 has 16 divisors (see below), whose sum is σ = 155240064. Its totient is φ = 25731264.

The previous prime is 77406883. The next prime is 77406919. The reversal of 77406906 is 60960477.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15375 + ... + 19778.

It is an arithmetic number, because the mean of its divisors is an integer number (9702504).

Almost surely, 2^77406906 is an apocalyptic number.

77406906 is an abundant number, since it is smaller than the sum of its proper divisors (77833158).

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

77406906 is a wasteful number, since it uses less digits than its factorization.

77406906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35525.

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 77406906 is about 8798.1194581570. The cubic root of 77406906 is about 426.1801680105.

The spelling of 77406906 in words is "seventy-seven million, four hundred six thousand, nine hundred six".