85670493 has 4 divisors (see below), whose sum is σ = 114227328. Its totient is φ = 57113660.

The previous prime is 85670489. The next prime is 85670509. The reversal of 85670493 is 39407658.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85670493 - 2² = 85670489 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85670393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14278413 + ... + 14278418.

It is an arithmetic number, because the mean of its divisors is an integer number (28556832).

Almost surely, 2^85670493 is an apocalyptic number.

It is an amenable number.

85670493 is a deficient number, since it is larger than the sum of its proper divisors (28556835).

85670493 is a wasteful number, since it uses less digits than its factorization.

85670493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28556834.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 85670493 is about 9255.8356186786. The cubic root of 85670493 is about 440.8360361452.

The spelling of 85670493 in words is "eighty-five million, six hundred seventy thousand, four hundred ninety-three".