85078657 has 4 divisors (see below), whose sum is σ = 85098496. Its totient is φ = 85058820.

The previous prime is 85078549. The next prime is 85078673. The reversal of 85078657 is 75687058.

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 85078657 - 2⁷ = 85078529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85078757) 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, 513 + ... + 13054.

It is an arithmetic number, because the mean of its divisors is an integer number (21274624).

Almost surely, 2^85078657 is an apocalyptic number.

It is an amenable number.

85078657 is a deficient number, since it is larger than the sum of its proper divisors (19839).

85078657 is a wasteful number, since it uses less digits than its factorization.

85078657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19838.

The product of its (nonzero) digits is 470400, while the sum is 46.

The square root of 85078657 is about 9223.8092456425. The cubic root of 85078657 is about 439.8185494937.

It can be divided in two parts, 850 and 78657, that added together give a cube (79507 = 43³).

The spelling of 85078657 in words is "eighty-five million, seventy-eight thousand, six hundred fifty-seven".