87632769 has 32 divisors (see below), whose sum is σ = 143585280. Its totient is φ = 46420992.

The previous prime is 87632767. The next prime is 87632771. The reversal of 87632769 is 96723678.

It is an interprime number because it is at equal distance from previous prime (87632767) and next prime (87632771).

It is not a de Polignac number, because 87632769 - 2¹ = 87632767 is a prime.

It is a super-2 number, since 2×87632769² = 15359004405214722, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (87632767) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16417 + ... + 21089.

It is an arithmetic number, because the mean of its divisors is an integer number (4487040).

Almost surely, 2^87632769 is an apocalyptic number.

It is an amenable number.

87632769 is a deficient number, since it is larger than the sum of its proper divisors (55952511).

87632769 is a wasteful number, since it uses less digits than its factorization.

87632769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4749.

The product of its digits is 762048, while the sum is 48.

The square root of 87632769 is about 9361.2375784401. The cubic root of 87632769 is about 444.1764323978.

Subtracting 87632769 from its reverse (96723678), we obtain a palindrome (9090909).

The spelling of 87632769 in words is "eighty-seven million, six hundred thirty-two thousand, seven hundred sixty-nine".