83717091 has 8 divisors (see below), whose sum is σ = 124025360. Its totient is φ = 55811376.

The previous prime is 83717089. The next prime is 83717107. The reversal of 83717091 is 19071738.

It is not a de Polignac number, because 83717091 - 2¹ = 83717089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83719091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1550290 + ... + 1550343.

It is an arithmetic number, because the mean of its divisors is an integer number (15503170).

Almost surely, 2^83717091 is an apocalyptic number.

83717091 is a deficient number, since it is larger than the sum of its proper divisors (40308269).

83717091 is a wasteful number, since it uses less digits than its factorization.

83717091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3100642 (or 3100636 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 83717091 is about 9149.7044214554. The cubic root of 83717091 is about 437.4596921776.

The spelling of 83717091 in words is "eighty-three million, seven hundred seventeen thousand, ninety-one".