87457799 has 16 divisors (see below), whose sum is σ = 107218944. Its totient is φ = 70197600.

The previous prime is 87457793. The next prime is 87457801. The reversal of 87457799 is 99775478.

It is not a de Polignac number, because 87457799 - 2²⁰ = 86409223 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 (87457793) 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, 10007 + ... + 16584.

It is an arithmetic number, because the mean of its divisors is an integer number (6701184).

Almost surely, 2^87457799 is an apocalyptic number.

87457799 is a deficient number, since it is larger than the sum of its proper divisors (19761145).

87457799 is a wasteful number, since it uses less digits than its factorization.

87457799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26638.

The product of its digits is 4445280, while the sum is 56.

The square root of 87457799 is about 9351.8874565512. The cubic root of 87457799 is about 443.8806171335.

It can be divided in two parts, 874 and 57799, that multiplied together give a triangular number (50516326 = T₁₀₀₅₁).

The spelling of 87457799 in words is "eighty-seven million, four hundred fifty-seven thousand, seven hundred ninety-nine".