87497847 has 16 divisors (see below), whose sum is σ = 130152960. Its totient is φ = 58095000.

The previous prime is 87497833. The next prime is 87497849. The reversal of 87497847 is 74879478.

It is not a de Polignac number, because 87497847 - 2¹² = 87493751 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87497793 and 87497802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87497849) 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, 322 + ... + 13232.

It is an arithmetic number, because the mean of its divisors is an integer number (8134560).

Almost surely, 2^87497847 is an apocalyptic number.

87497847 is a deficient number, since it is larger than the sum of its proper divisors (42655113).

87497847 is a wasteful number, since it uses less digits than its factorization.

87497847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13171 (or 13165 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 54.

The square root of 87497847 is about 9354.0283835362. The cubic root of 87497847 is about 443.9483595894.

The spelling of 87497847 in words is "eighty-seven million, four hundred ninety-seven thousand, eight hundred forty-seven".