85087658 has 4 divisors (see below), whose sum is σ = 127631490. Its totient is φ = 42543828.

The previous prime is 85087633. The next prime is 85087733. The reversal of 85087658 is 85678058.

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., 79691329 + 5396329 = 8927^2 + 2323^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21271913 + ... + 21271916.

Almost surely, 2^85087658 is an apocalyptic number.

85087658 is a deficient number, since it is larger than the sum of its proper divisors (42543832).

85087658 is a wasteful number, since it uses less digits than its factorization.

85087658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42543831.

The product of its (nonzero) digits is 537600, while the sum is 47.

The square root of 85087658 is about 9224.2971547972. The cubic root of 85087658 is about 439.8340593262.

The spelling of 85087658 in words is "eighty-five million, eighty-seven thousand, six hundred fifty-eight".