85221964 has 12 divisors (see below), whose sum is σ = 149205784. Its totient is φ = 42591744.

The previous prime is 85221947. The next prime is 85221967. The reversal of 85221964 is 46912258.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (85221967) 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, 10747 + ... + 16909.

Almost surely, 2^85221964 is an apocalyptic number.

It is an amenable number.

85221964 is a deficient number, since it is larger than the sum of its proper divisors (63983820).

85221964 is a wasteful number, since it uses less digits than its factorization.

85221964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9624 (or 9622 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 85221964 is about 9231.5742969442. The cubic root of 85221964 is about 440.0653553058.

The spelling of 85221964 in words is "eighty-five million, two hundred twenty-one thousand, nine hundred sixty-four".