84625631 has 4 divisors (see below), whose sum is σ = 84827064. Its totient is φ = 84424200.

The previous prime is 84625627. The next prime is 84625637. The reversal of 84625631 is 13652648.

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 84625631 - 2² = 84625627 is a prime.

It is a super-2 number, since 2×84625631² = 14322994844296322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84625591 and 84625600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84625637) 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, 100085 + ... + 100926.

It is an arithmetic number, because the mean of its divisors is an integer number (21206766).

Almost surely, 2^84625631 is an apocalyptic number.

84625631 is a deficient number, since it is larger than the sum of its proper divisors (201433).

84625631 is a wasteful number, since it uses less digits than its factorization.

84625631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201432.

The product of its digits is 34560, while the sum is 35.

The square root of 84625631 is about 9199.2190429405. The cubic root of 84625631 is about 439.0365126170.

The spelling of 84625631 in words is "eighty-four million, six hundred twenty-five thousand, six hundred thirty-one".