85660407 has 12 divisors (see below), whose sum is σ = 141407760. Its totient is φ = 48948768.

The previous prime is 85660391. The next prime is 85660459. The reversal of 85660407 is 70406658.

It is a happy number.

It is not a de Polignac number, because 85660407 - 2⁴ = 85660391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85660307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 679782 + ... + 679907.

It is an arithmetic number, because the mean of its divisors is an integer number (11783980).

Almost surely, 2^85660407 is an apocalyptic number.

85660407 is a deficient number, since it is larger than the sum of its proper divisors (55747353).

85660407 is a wasteful number, since it uses less digits than its factorization.

85660407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1359702 (or 1359699 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 85660407 is about 9255.2907571832. The cubic root of 85660407 is about 440.8187355687.

The spelling of 85660407 in words is "eighty-five million, six hundred sixty thousand, four hundred seven".