77440006 has 16 divisors (see below), whose sum is σ = 134574624. Its totient is φ = 32733504.

The previous prime is 77439997. The next prime is 77440043. The reversal of 77440006 is 60004477.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36865 + ... + 38908.

It is an arithmetic number, because the mean of its divisors is an integer number (8410914).

Almost surely, 2^77440006 is an apocalyptic number.

77440006 is a deficient number, since it is larger than the sum of its proper divisors (57134618).

77440006 is a wasteful number, since it uses less digits than its factorization.

77440006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75855.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 77440006 is about 8800.0003409091. Note that the first 3 decimals coincide. The cubic root of 77440006 is about 426.2409057149.

The spelling of 77440006 in words is "seventy-seven million, four hundred forty thousand, six".