85472661 has 4 divisors (see below), whose sum is σ = 113963552. Its totient is φ = 56981772.

The previous prime is 85472609. The next prime is 85472687. The reversal of 85472661 is 16627458.

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 not a de Polignac number, because 85472661 - 2¹⁰ = 85471637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85474661) 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, 14245441 + ... + 14245446.

It is an arithmetic number, because the mean of its divisors is an integer number (28490888).

Almost surely, 2^85472661 is an apocalyptic number.

It is an amenable number.

85472661 is a deficient number, since it is larger than the sum of its proper divisors (28490891).

85472661 is a wasteful number, since it uses less digits than its factorization.

85472661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28490890.

The product of its digits is 80640, while the sum is 39.

The square root of 85472661 is about 9245.1425624487. The cubic root of 85472661 is about 440.4964455112.

The spelling of 85472661 in words is "eighty-five million, four hundred seventy-two thousand, six hundred sixty-one".