84665901 has 4 divisors (see below), whose sum is σ = 112887872. Its totient is φ = 56443932.

The previous prime is 84665849. The next prime is 84665923. The reversal of 84665901 is 10956648.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 84665901 - 2⁶ = 84665837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 84665901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84665981) 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, 14110981 + ... + 14110986.

It is an arithmetic number, because the mean of its divisors is an integer number (28221968).

Almost surely, 2^84665901 is an apocalyptic number.

It is an amenable number.

84665901 is a deficient number, since it is larger than the sum of its proper divisors (28221971).

84665901 is a wasteful number, since it uses less digits than its factorization.

84665901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28221970.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 84665901 is about 9201.4075553689. The cubic root of 84665901 is about 439.1061416269.

The spelling of 84665901 in words is "eighty-four million, six hundred sixty-five thousand, nine hundred one".