66970536 has 32 divisors (see below), whose sum is σ = 167702400. Its totient is φ = 22286720.

The previous prime is 66970517. The next prime is 66970559. The reversal of 66970536 is 63507966.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15316 + ... + 19196.

It is an arithmetic number, because the mean of its divisors is an integer number (5240700).

Almost surely, 2^66970536 is an apocalyptic number.

It is an amenable number.

66970536 is an abundant number, since it is smaller than the sum of its proper divisors (100731864).

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

66970536 is a wasteful number, since it uses less digits than its factorization.

66970536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4609 (or 4605 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 42.

The square root of 66970536 is about 8183.5527737041. The cubic root of 66970536 is about 406.0952642737.

The spelling of 66970536 in words is "sixty-six million, nine hundred seventy thousand, five hundred thirty-six".