86700981 has 8 divisors (see below), whose sum is σ = 119587680. Its totient is φ = 55807472.

The previous prime is 86700979. The next prime is 86700983. The reversal of 86700981 is 18900768.

It is an interprime number because it is at equal distance from previous prime (86700979) and next prime (86700983).

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 86700981 - 2¹ = 86700979 is a prime.

It is a super-2 number, since 2×86700981² = 15034120212724722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86700983) 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, 498195 + ... + 498368.

It is an arithmetic number, because the mean of its divisors is an integer number (14948460).

Almost surely, 2^86700981 is an apocalyptic number.

It is an amenable number.

86700981 is a deficient number, since it is larger than the sum of its proper divisors (32886699).

86700981 is a wasteful number, since it uses less digits than its factorization.

86700981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996595.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 86700981 is about 9311.3361554613. The cubic root of 86700981 is about 442.5965291023.

The spelling of 86700981 in words is "eighty-six million, seven hundred thousand, nine hundred eighty-one".