85407012 has 18 divisors (see below), whose sum is σ = 215890038. Its totient is φ = 28468992.

The previous prime is 85406999. The next prime is 85407013. The reversal of 85407012 is 21070458.

It can be written as a sum of positive squares in only one way, i.e., 74753316 + 10653696 = 8646^2 + 3264^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (85407013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1186173 + ... + 1186244.

It is an arithmetic number, because the mean of its divisors is an integer number (11993891).

Almost surely, 2^85407012 is an apocalyptic number.

It is an amenable number.

85407012 is an abundant number, since it is smaller than the sum of its proper divisors (130483026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85407012 is a wasteful number, since it uses less digits than its factorization.

85407012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2372427 (or 2372422 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 85407012 is about 9241.5914213949. The cubic root of 85407012 is about 440.3836392341.

The spelling of 85407012 in words is "eighty-five million, four hundred seven thousand, twelve".