87612745 has 16 divisors (see below), whose sum is σ = 115473600. Its totient is φ = 63284800.

The previous prime is 87612737. The next prime is 87612821. The reversal of 87612745 is 54721678.

It is not a de Polignac number, because 87612745 - 2³ = 87612737 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 87612698 and 87612707.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2850 + ... + 13540.

It is an arithmetic number, because the mean of its divisors is an integer number (7217100).

Almost surely, 2^87612745 is an apocalyptic number.

It is an amenable number.

87612745 is a deficient number, since it is larger than the sum of its proper divisors (27860855).

87612745 is a wasteful number, since it uses less digits than its factorization.

87612745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10856.

The product of its digits is 94080, while the sum is 40.

The square root of 87612745 is about 9360.1680006290. The cubic root of 87612745 is about 444.1425985306.

The spelling of 87612745 in words is "eighty-seven million, six hundred twelve thousand, seven hundred forty-five".