66959004 has 24 divisors (see below), whose sum is σ = 178557568. Its totient is φ = 19131120.

The previous prime is 66958967. The next prime is 66959017. The reversal of 66959004 is 40095966.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398482 + ... + 398649.

Almost surely, 2^66959004 is an apocalyptic number.

It is an amenable number.

66959004 is an abundant number, since it is smaller than the sum of its proper divisors (111598564).

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

66959004 is a wasteful number, since it uses less digits than its factorization.

66959004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797145 (or 797143 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 66959004 is about 8182.8481594125. The cubic root of 66959004 is about 406.0719537270.

The spelling of 66959004 in words is "sixty-six million, nine hundred fifty-nine thousand, four".