87497972074 has 8 divisors (see below), whose sum is σ = 131248237860. Its totient is φ = 43748559456.

The previous prime is 87497972011. The next prime is 87497972077. The reversal of 87497972074 is 47027979478.

It can be written as a sum of positive squares in 2 ways, for example, as 87493498849 + 4473225 = 295793^2 + 2115^2 .

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

It is a super-2 number, since 2×87497972074² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87497971997 and 87497972015.

It is not an unprimeable number, because it can be changed into a prime (87497972077) 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, 215532 + ... + 470584.

Almost surely, 2^87497972074 is an apocalyptic number.

87497972074 is a deficient number, since it is larger than the sum of its proper divisors (43750265786).

87497972074 is a wasteful number, since it uses less digits than its factorization.

87497972074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426584.

The product of its (nonzero) digits is 49787136, while the sum is 64.

The spelling of 87497972074 in words is "eighty-seven billion, four hundred ninety-seven million, nine hundred seventy-two thousand, seventy-four".