87244745 has 12 divisors (see below), whose sum is σ = 121786884. Its totient is φ = 59824800.

The previous prime is 87244739. The next prime is 87244763. The reversal of 87244745 is 54744278.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15147664 + 72097081 = 3892^2 + 8491^2 .

It is not a de Polignac number, because 87244745 - 2¹⁰ = 87243721 is a prime.

It is a super-2 number, since 2×87244745² = 15223291060230050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 177806 + ... + 178295.

It is an arithmetic number, because the mean of its divisors is an integer number (10148907).

Almost surely, 2^87244745 is an apocalyptic number.

It is an amenable number.

87244745 is a deficient number, since it is larger than the sum of its proper divisors (34542139).

87244745 is a wasteful number, since it uses less digits than its factorization.

87244745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356120 (or 356113 counting only the distinct ones).

The product of its digits is 250880, while the sum is 41.

The square root of 87244745 is about 9340.4895481982. The cubic root of 87244745 is about 443.5198814800.

The spelling of 87244745 in words is "eighty-seven million, two hundred forty-four thousand, seven hundred forty-five".