66004770 has 32 divisors (see below), whose sum is σ = 170597952. Its totient is φ = 16247232.

The previous prime is 66004753. The next prime is 66004787. The reversal of 66004770 is 7740066.

It is an interprime number because it is at equal distance from previous prime (66004753) and next prime (66004787).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84232 + ... + 85011.

It is an arithmetic number, because the mean of its divisors is an integer number (5331186).

Almost surely, 2^66004770 is an apocalyptic number.

66004770 is an abundant number, since it is smaller than the sum of its proper divisors (104593182).

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

66004770 is a wasteful number, since it uses less digits than its factorization.

66004770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169266.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 66004770 is about 8124.3319725378. The cubic root of 66004770 is about 404.1337375423.

The spelling of 66004770 in words is "sixty-six million, four thousand, seven hundred seventy".