87840674 has 4 divisors (see below), whose sum is σ = 131761014. Its totient is φ = 43920336.

The previous prime is 87840673. The next prime is 87840679. The reversal of 87840674 is 47604878.

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

It can be written as a sum of positive squares in only one way, i.e., 78446449 + 9394225 = 8857^2 + 3065^2 .

It is a super-3 number, since 3×87840674³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (87840673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21960167 + ... + 21960170.

Almost surely, 2^87840674 is an apocalyptic number.

87840674 is a deficient number, since it is larger than the sum of its proper divisors (43920340).

87840674 is a wasteful number, since it uses less digits than its factorization.

87840674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43920339.

The product of its (nonzero) digits is 301056, while the sum is 44.

The square root of 87840674 is about 9372.3355680428. The cubic root of 87840674 is about 444.5274181799.

The spelling of 87840674 in words is "eighty-seven million, eight hundred forty thousand, six hundred seventy-four".