147983661 has 12 divisors (see below), whose sum is σ = 244290592. Its totient is φ = 84562056.

The previous prime is 147983653. The next prime is 147983663. The reversal of 147983661 is 166389741.

It is a happy number.

It is not a de Polignac number, because 147983661 - 2³ = 147983653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147983663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1174411 + ... + 1174536.

Almost surely, 2^147983661 is an apocalyptic number.

It is an amenable number.

147983661 is a deficient number, since it is larger than the sum of its proper divisors (96306931).

147983661 is a wasteful number, since it uses less digits than its factorization.

147983661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2348960 (or 2348957 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 147983661 is about 12164.8535132981. The cubic root of 147983661 is about 528.9377811646.

The spelling of 147983661 in words is "one hundred forty-seven million, nine hundred eighty-three thousand, six hundred sixty-one".