87034985 has 8 divisors (see below), whose sum is σ = 110585736. Its totient is φ = 65532160.

The previous prime is 87034979. The next prime is 87034999. The reversal of 87034985 is 58943078.

It can be written as a sum of positive squares in 4 ways, for example, as 619369 + 86415616 = 787^2 + 9296^2 .

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

It is not a de Polignac number, because 87034985 - 2⁸ = 87034729 is a prime.

It is a super-2 number, since 2×87034985² = 15150177227900450, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511886 + ... + 512055.

It is an arithmetic number, because the mean of its divisors is an integer number (13823217).

Almost surely, 2^87034985 is an apocalyptic number.

87034985 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

87034985 is a deficient number, since it is larger than the sum of its proper divisors (23550751).

87034985 is a wasteful number, since it uses less digits than its factorization.

87034985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023963.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 87034985 is about 9329.2542574420. The cubic root of 87034985 is about 443.1641489228.

The spelling of 87034985 in words is "eighty-seven million, thirty-four thousand, nine hundred eighty-five".