87898767 has 16 divisors (see below), whose sum is σ = 128321280. Its totient is φ = 53076800.

The previous prime is 87898763. The next prime is 87898777. The reversal of 87898767 is 76789878.

87898767 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a cyclic number.

It is not a de Polignac number, because 87898767 - 2² = 87898763 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 87898767.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87898763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4534 + ... + 14012.

It is an arithmetic number, because the mean of its divisors is an integer number (8020080).

Almost surely, 2^87898767 is an apocalyptic number.

87898767 is a deficient number, since it is larger than the sum of its proper divisors (40422513).

87898767 is a wasteful number, since it uses less digits than its factorization.

87898767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9774.

The product of its digits is 9483264, while the sum is 60.

The square root of 87898767 is about 9375.4342299437. The cubic root of 87898767 is about 444.6253919293.

Subtracting from 87898767 its reverse (76789878), we obtain a square (11108889 = 3333²).

The spelling of 87898767 in words is "eighty-seven million, eight hundred ninety-eight thousand, seven hundred sixty-seven".