85674981 has 24 divisors (see below), whose sum is σ = 134127840. Its totient is φ = 48498912.

The previous prime is 85674973. The next prime is 85675001. The reversal of 85674981 is 18947658.

It is not a de Polignac number, because 85674981 - 2³ = 85674973 is a prime.

It is a super-2 number, since 2×85674981² = 14680404738700722, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 85674981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85674181) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13350 + ... + 18696.

It is an arithmetic number, because the mean of its divisors is an integer number (5588660).

Almost surely, 2^85674981 is an apocalyptic number.

It is an amenable number.

85674981 is a deficient number, since it is larger than the sum of its proper divisors (48452859).

85674981 is a wasteful number, since it uses less digits than its factorization.

85674981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5473 (or 5466 counting only the distinct ones).

The product of its digits is 483840, while the sum is 48.

The square root of 85674981 is about 9256.0780571471. The cubic root of 85674981 is about 440.8437340021.

The spelling of 85674981 in words is "eighty-five million, six hundred seventy-four thousand, nine hundred eighty-one".