85890916 has 6 divisors (see below), whose sum is σ = 150309110. Its totient is φ = 42945456.

The previous prime is 85890913. The next prime is 85890923. The reversal of 85890916 is 61909858.

It can be written as a sum of positive squares in only one way, i.e., 54081316 + 31809600 = 7354^2 + 5640^2 .

It is not an unprimeable number, because it can be changed into a prime (85890913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10736361 + ... + 10736368.

Almost surely, 2^85890916 is an apocalyptic number.

It is an amenable number.

85890916 is a deficient number, since it is larger than the sum of its proper divisors (64418194).

85890916 is a wasteful number, since it uses less digits than its factorization.

85890916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21472733 (or 21472731 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 46.

The square root of 85890916 is about 9267.7352141718. The cubic root of 85890916 is about 441.2137904144.

The spelling of 85890916 in words is "eighty-five million, eight hundred ninety thousand, nine hundred sixteen".