84901861 has 16 divisors (see below), whose sum is σ = 97920000. Its totient is φ = 72802800.

The previous prime is 84901849. The next prime is 84901877. The reversal of 84901861 is 16810948.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 84901861 - 2⁵ = 84901829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84901861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84901801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55890 + ... + 57388.

It is an arithmetic number, because the mean of its divisors is an integer number (6120000).

Almost surely, 2^84901861 is an apocalyptic number.

It is an amenable number.

84901861 is a deficient number, since it is larger than the sum of its proper divisors (13018139).

84901861 is a wasteful number, since it uses less digits than its factorization.

84901861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 84901861 is about 9214.2205855949. The cubic root of 84901861 is about 439.5136861803.

The spelling of 84901861 in words is "eighty-four million, nine hundred one thousand, eight hundred sixty-one".