83620805 has 8 divisors (see below), whose sum is σ = 105626400. Its totient is φ = 63375696.

The previous prime is 83620799. The next prime is 83620811. The reversal of 83620805 is 50802638.

It is an interprime number because it is at equal distance from previous prime (83620799) and next prime (83620811).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83620805 - 2¹⁸ = 83358661 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 440015 + ... + 440204.

It is an arithmetic number, because the mean of its divisors is an integer number (13203300).

Almost surely, 2^83620805 is an apocalyptic number.

It is an amenable number.

83620805 is a deficient number, since it is larger than the sum of its proper divisors (22005595).

83620805 is a wasteful number, since it uses less digits than its factorization.

83620805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880243.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 83620805 is about 9144.4412076408. The cubic root of 83620805 is about 437.2919151956.

The spelling of 83620805 in words is "eighty-three million, six hundred twenty thousand, eight hundred five".