87761759 has 4 divisors (see below), whose sum is σ = 89071704. Its totient is φ = 86451816.

The previous prime is 87761719. The next prime is 87761761. The reversal of 87761759 is 95716778.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87761759 - 2⁸ = 87761503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87761719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 654872 + ... + 655005.

It is an arithmetic number, because the mean of its divisors is an integer number (22267926).

Almost surely, 2^87761759 is an apocalyptic number.

87761759 is a deficient number, since it is larger than the sum of its proper divisors (1309945).

87761759 is a wasteful number, since it uses less digits than its factorization.

87761759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309944.

The product of its digits is 740880, while the sum is 50.

The square root of 87761759 is about 9368.1246255587. The cubic root of 87761759 is about 444.3942589422.

The spelling of 87761759 in words is "eighty-seven million, seven hundred sixty-one thousand, seven hundred fifty-nine".