83690551 has 8 divisors (see below), whose sum is σ = 97451424. Its totient is φ = 70380960.

The previous prime is 83690543. The next prime is 83690567. The reversal of 83690551 is 15509638.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83690551 - 2³ = 83690543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83690551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83690591) 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, 112420 + ... + 113161.

It is an arithmetic number, because the mean of its divisors is an integer number (12181428).

Almost surely, 2^83690551 is an apocalyptic number.

83690551 is a deficient number, since it is larger than the sum of its proper divisors (13760873).

83690551 is a wasteful number, since it uses less digits than its factorization.

83690551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225641.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 83690551 is about 9148.2539864173. The cubic root of 83690551 is about 437.4134594542.

The spelling of 83690551 in words is "eighty-three million, six hundred ninety thousand, five hundred fifty-one".