661848532 has 12 divisors (see below), whose sum is σ = 1159292736. Its totient is φ = 330622040.

The previous prime is 661848503. The next prime is 661848547. The reversal of 661848532 is 235848166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70594 + ... + 79417.

It is an arithmetic number, because the mean of its divisors is an integer number (96607728).

Almost surely, 2^661848532 is an apocalyptic number.

It is an amenable number.

661848532 is a deficient number, since it is larger than the sum of its proper divisors (497444204).

661848532 is a wasteful number, since it uses less digits than its factorization.

661848532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151118 (or 151116 counting only the distinct ones).

The product of its digits is 276480, while the sum is 43.

The square root of 661848532 is about 25726.4170066490. The cubic root of 661848532 is about 871.4708602045.

The spelling of 661848532 in words is "six hundred sixty-one million, eight hundred forty-eight thousand, five hundred thirty-two".