87498769 has 8 divisors (see below), whose sum is σ = 88881320. Its totient is φ = 86126976.

The previous prime is 87498757. The next prime is 87498773. The reversal of 87498769 is 96789478.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 169744 + 87329025 = 412^2 + 9345^2 .

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 87498769 - 2⁵ = 87498737 is a prime.

It is a super-2 number, since 2×87498769² = 15312069153030722, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87498799) 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, 14557 + ... + 19669.

It is an arithmetic number, because the mean of its divisors is an integer number (11110165).

Almost surely, 2^87498769 is an apocalyptic number.

It is an amenable number.

87498769 is a deficient number, since it is larger than the sum of its proper divisors (1382551).

87498769 is a wasteful number, since it uses less digits than its factorization.

87498769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5379.

The product of its digits is 6096384, while the sum is 58.

The square root of 87498769 is about 9354.0776669857. The cubic root of 87498769 is about 443.9499189381.

The spelling of 87498769 in words is "eighty-seven million, four hundred ninety-eight thousand, seven hundred sixty-nine".