66777004 has 36 divisors (see below), whose sum is σ = 141858864. Its totient is φ = 27372576.

The previous prime is 66776993. The next prime is 66777017. The reversal of 66777004 is 40077766.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2899 + ... + 11914.

It is an arithmetic number, because the mean of its divisors is an integer number (3940524).

Almost surely, 2^66777004 is an apocalyptic number.

It is an amenable number.

66777004 is an abundant number, since it is smaller than the sum of its proper divisors (75081860).

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

66777004 is a wasteful number, since it uses less digits than its factorization.

66777004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14854 (or 14845 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 66777004 is about 8171.7197700362. The cubic root of 66777004 is about 405.7037077234.

The spelling of 66777004 in words is "sixty-six million, seven hundred seventy-seven thousand, four".