99617481 has 6 divisors (see below), whose sum is σ = 143891930. Its totient is φ = 66411648.

The previous prime is 99617459. The next prime is 99617489. The reversal of 99617481 is 18471699.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 86657481 + 12960000 = 9309^2 + 3600^2 .

It is not a de Polignac number, because 99617481 - 2⁵ = 99617449 is a prime.

It is a super-2 number, since 2×99617481² = 19847285041570722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99617489) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5534296 + ... + 5534313.

Almost surely, 2^99617481 is an apocalyptic number.

It is an amenable number.

99617481 is a deficient number, since it is larger than the sum of its proper divisors (44274449).

99617481 is a wasteful number, since it uses less digits than its factorization.

99617481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11068615 (or 11068612 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 99617481 is about 9980.8557248364. The cubic root of 99617481 is about 463.5662951573.

The spelling of 99617481 in words is "ninety-nine million, six hundred seventeen thousand, four hundred eighty-one".