85177699 has 4 divisors (see below), whose sum is σ = 85196664. Its totient is φ = 85158736.

The previous prime is 85177693. The next prime is 85177709. The reversal of 85177699 is 99677158.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85177699 - 2⁹ = 85177187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85177693) 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, 1479 + ... + 13135.

It is an arithmetic number, because the mean of its divisors is an integer number (21299166).

Almost surely, 2^85177699 is an apocalyptic number.

85177699 is a deficient number, since it is larger than the sum of its proper divisors (18965).

85177699 is a wasteful number, since it uses less digits than its factorization.

85177699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18964.

The product of its digits is 952560, while the sum is 52.

The square root of 85177699 is about 9229.1765071430. The cubic root of 85177699 is about 439.9891509033.

The spelling of 85177699 in words is "eighty-five million, one hundred seventy-seven thousand, six hundred ninety-nine".