85224637 has 8 divisors (see below), whose sum is σ = 90184320. Its totient is φ = 80369520.

The previous prime is 85224599. The next prime is 85224641. The reversal of 85224637 is 73642258.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85224637 - 2⁷ = 85224509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85224596 and 85224605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85221637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24462 + ... + 27727.

It is an arithmetic number, because the mean of its divisors is an integer number (11273040).

Almost surely, 2^85224637 is an apocalyptic number.

It is an amenable number.

85224637 is a deficient number, since it is larger than the sum of its proper divisors (4959683).

85224637 is a wasteful number, since it uses less digits than its factorization.

85224637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52283.

The product of its digits is 80640, while the sum is 37.

The square root of 85224637 is about 9231.7190706823. The cubic root of 85224637 is about 440.0699561635.

The spelling of 85224637 in words is "eighty-five million, two hundred twenty-four thousand, six hundred thirty-seven".