83720701 has 2 divisors, whose sum is σ = 83720702. Its totient is φ = 83720700.

The previous prime is 83720687. The next prime is 83720737. The reversal of 83720701 is 10702738.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78765625 + 4955076 = 8875^2 + 2226^2 .

It is a cyclic number.

It is not a de Polignac number, because 83720701 - 2¹¹ = 83718653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83720701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83720501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41860350 + 41860351.

It is an arithmetic number, because the mean of its divisors is an integer number (41860351).

Almost surely, 2^83720701 is an apocalyptic number.

It is an amenable number.

83720701 is a deficient number, since it is larger than the sum of its proper divisors (1).

83720701 is an equidigital number, since it uses as much as digits as its factorization.

83720701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 83720701 is about 9149.9016934610. The cubic root of 83720701 is about 437.4659800486.

The spelling of 83720701 in words is "eighty-three million, seven hundred twenty thousand, seven hundred one".