987604815 has 16 divisors (see below), whose sum is σ = 1581722208. Its totient is φ = 526204416.

The previous prime is 987604811. The next prime is 987604829. The reversal of 987604815 is 518406789.

It is not a de Polignac number, because 987604815 - 2² = 987604811 is a prime.

It is a super-2 number, since 2×987604815² = 1950726541222368450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987604811) 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, 16374 + ... + 47363.

It is an arithmetic number, because the mean of its divisors is an integer number (98857638).

Almost surely, 2^987604815 is an apocalyptic number.

987604815 is a deficient number, since it is larger than the sum of its proper divisors (594117393).

987604815 is a wasteful number, since it uses less digits than its factorization.

987604815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64778.

The product of its (nonzero) digits is 483840, while the sum is 48.

The square root of 987604815 is about 31426.1804074246. The cubic root of 987604815 is about 995.8510819515.

The spelling of 987604815 in words is "nine hundred eighty-seven million, six hundred four thousand, eight hundred fifteen".