66700536 has 32 divisors (see below), whose sum is σ = 190573440. Its totient is φ = 19057248.

The previous prime is 66700523. The next prime is 66700541. The reversal of 66700536 is 63500766.

It is a junction number, because it is equal to n+sod(n) for n = 66700497 and 66700506.

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, 198346 + ... + 198681.

It is an arithmetic number, because the mean of its divisors is an integer number (5955420).

Almost surely, 2^66700536 is an apocalyptic number.

It is an amenable number.

66700536 is an abundant number, since it is smaller than the sum of its proper divisors (123872904).

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

66700536 is a wasteful number, since it uses less digits than its factorization.

66700536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397043 (or 397039 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 66700536 is about 8167.0396105321. The cubic root of 66700536 is about 405.5487881220.

The spelling of 66700536 in words is "sixty-six million, seven hundred thousand, five hundred thirty-six".