98651631 has 8 divisors (see below), whose sum is σ = 141653680. Its totient is φ = 60708672.

The previous prime is 98651627. The next prime is 98651633. The reversal of 98651631 is 13615689.

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

It is not a de Polignac number, because 98651631 - 2² = 98651627 is a prime.

It is a super-2 number, since 2×98651631² = 19464288597920322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 2529529 = 98651631 / (9 + 8 + 6 + 5 + 1 + 6 + 3 + 1).

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 98651631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98651633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1264726 + ... + 1264803.

It is an arithmetic number, because the mean of its divisors is an integer number (17706710).

Almost surely, 2^98651631 is an apocalyptic number.

98651631 is a deficient number, since it is larger than the sum of its proper divisors (43002049).

98651631 is a wasteful number, since it uses less digits than its factorization.

98651631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2529545.

The product of its digits is 38880, while the sum is 39.

The square root of 98651631 is about 9932.3527424271. The cubic root of 98651631 is about 462.0632444668.

The spelling of 98651631 in words is "ninety-eight million, six hundred fifty-one thousand, six hundred thirty-one".