87374647 has 4 divisors (see below), whose sum is σ = 90193216. Its totient is φ = 84556080.

The previous prime is 87374629. The next prime is 87374653. The reversal of 87374647 is 74647378.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87374647 - 2⁷ = 87374519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87374597 and 87374606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87374657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1409238 + ... + 1409299.

It is an arithmetic number, because the mean of its divisors is an integer number (22548304).

Almost surely, 2^87374647 is an apocalyptic number.

87374647 is a deficient number, since it is larger than the sum of its proper divisors (2818569).

87374647 is a wasteful number, since it uses less digits than its factorization.

87374647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2818568.

The product of its digits is 790272, while the sum is 46.

The square root of 87374647 is about 9347.4406657651. The cubic root of 87374647 is about 443.7398968274.

The spelling of 87374647 in words is "eighty-seven million, three hundred seventy-four thousand, six hundred forty-seven".