84641615 has 4 divisors (see below), whose sum is σ = 101569944. Its totient is φ = 67713288.

The previous prime is 84641603. The next prime is 84641617. The reversal of 84641615 is 51614648.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84641615 - 2⁶ = 84641551 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 (84641617) 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, 8464157 + ... + 8464166.

It is an arithmetic number, because the mean of its divisors is an integer number (25392486).

Almost surely, 2^84641615 is an apocalyptic number.

84641615 is a deficient number, since it is larger than the sum of its proper divisors (16928329).

84641615 is a wasteful number, since it uses less digits than its factorization.

84641615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16928328.

The product of its digits is 23040, while the sum is 35.

The square root of 84641615 is about 9200.0877713204. The cubic root of 84641615 is about 439.0641524615.

The spelling of 84641615 in words is "eighty-four million, six hundred forty-one thousand, six hundred fifteen".