87744485 has 8 divisors (see below), whose sum is σ = 105731736. Its totient is φ = 69903360.

The previous prime is 87744421. The next prime is 87744487. The reversal of 87744485 is 58444778.

It can be written as a sum of positive squares in 4 ways, for example, as 16662724 + 71081761 = 4082^2 + 8431^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87744485 - 2⁶ = 87744421 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 (87744487) 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, 35204 + ... + 37613.

It is an arithmetic number, because the mean of its divisors is an integer number (13216467).

Almost surely, 2^87744485 is an apocalyptic number.

It is an amenable number.

87744485 is a deficient number, since it is larger than the sum of its proper divisors (17987251).

87744485 is a wasteful number, since it uses less digits than its factorization.

87744485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73063.

The product of its digits is 1003520, while the sum is 47.

The square root of 87744485 is about 9367.2026240495. The cubic root of 87744485 is about 444.3651005699.

The spelling of 87744485 in words is "eighty-seven million, seven hundred forty-four thousand, four hundred eighty-five".