83737861 has 2 divisors, whose sum is σ = 83737862. Its totient is φ = 83737860.

The previous prime is 83737847. The next prime is 83737939. The reversal of 83737861 is 16873738.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42380100 + 41357761 = 6510^2 + 6431^2 .

It is a cyclic number.

It is not a de Polignac number, because 83737861 - 2²⁵ = 50183429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83737261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41868930 + 41868931.

It is an arithmetic number, because the mean of its divisors is an integer number (41868931).

Almost surely, 2^83737861 is an apocalyptic number.

It is an amenable number.

83737861 is a deficient number, since it is larger than the sum of its proper divisors (1).

83737861 is an equidigital number, since it uses as much as digits as its factorization.

83737861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 43.

The square root of 83737861 is about 9150.8393604084. The cubic root of 83737861 is about 437.4958667365.

The spelling of 83737861 in words is "eighty-three million, seven hundred thirty-seven thousand, eight hundred sixty-one".