93661640 has 32 divisors (see below), whose sum is σ = 221832000. Its totient is φ = 35492544.

The previous prime is 93661639. The next prime is 93661663. The reversal of 93661640 is 4616639.

It is a self number, because there is not a number n which added to its sum of digits gives 93661640.

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, 60860 + ... + 62379.

It is an arithmetic number, because the mean of its divisors is an integer number (6932250).

Almost surely, 2^93661640 is an apocalyptic number.

It is an amenable number.

93661640 is an abundant number, since it is smaller than the sum of its proper divisors (128170360).

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

93661640 is a wasteful number, since it uses less digits than its factorization.

93661640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123269 (or 123265 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 93661640 is about 9677.8943990932. The cubic root of 93661640 is about 454.1373826567.

The spelling of 93661640 in words is "ninety-three million, six hundred sixty-one thousand, six hundred forty".