84695621 has 4 divisors (see below), whose sum is σ = 86131200. Its totient is φ = 83260044.

The previous prime is 84695617. The next prime is 84695641. The reversal of 84695621 is 12659648.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 84695621 - 2² = 84695617 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84695641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 717701 + ... + 717818.

It is an arithmetic number, because the mean of its divisors is an integer number (21532800).

Almost surely, 2^84695621 is an apocalyptic number.

It is an amenable number.

84695621 is a deficient number, since it is larger than the sum of its proper divisors (1435579).

84695621 is a wasteful number, since it uses less digits than its factorization.

84695621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435578.

The product of its digits is 103680, while the sum is 41.

The square root of 84695621 is about 9203.0223839780. The cubic root of 84695621 is about 439.1575149570.

The spelling of 84695621 in words is "eighty-four million, six hundred ninety-five thousand, six hundred twenty-one".