83947633 has 12 divisors (see below), whose sum is σ = 106531632. Its totient is φ = 65413320.

The previous prime is 83947621. The next prime is 83947657. The reversal of 83947633 is 33674938.

It is not a de Polignac number, because 83947633 - 2⁹ = 83947121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83947633.

It is not an unprimeable number, because it can be changed into a prime (83947673) 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, 77335 + ... + 78412.

It is an arithmetic number, because the mean of its divisors is an integer number (8877636).

Almost surely, 2^83947633 is an apocalyptic number.

It is an amenable number.

83947633 is a deficient number, since it is larger than the sum of its proper divisors (22583999).

83947633 is a wasteful number, since it uses less digits than its factorization.

83947633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155772 (or 155765 counting only the distinct ones).

The product of its digits is 326592, while the sum is 43.

The square root of 83947633 is about 9162.2940904557. The cubic root of 83947633 is about 437.8608862293.

The spelling of 83947633 in words is "eighty-three million, nine hundred forty-seven thousand, six hundred thirty-three".