381712660 has 48 divisors (see below), whose sum is σ = 964333440. Its totient is φ = 123984000.

The previous prime is 381712651. The next prime is 381712673. The reversal of 381712660 is 66217183.

It is a congruent 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, 69091 + ... + 74410.

It is an arithmetic number, because the mean of its divisors is an integer number (20090280).

Almost surely, 2^381712660 is an apocalyptic number.

It is an amenable number.

381712660 is an abundant number, since it is smaller than the sum of its proper divisors (582620780).

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

381712660 is a wasteful number, since it uses less digits than its factorization.

381712660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143536 (or 143534 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 381712660 is about 19537.4681061800. The cubic root of 381712660 is about 725.4021771772.

The spelling of 381712660 in words is "three hundred eighty-one million, seven hundred twelve thousand, six hundred sixty".