83477213 has 2 divisors, whose sum is σ = 83477214. Its totient is φ = 83477212.

The previous prime is 83477209. The next prime is 83477231. The reversal of 83477213 is 31277438.

Together with next prime (83477231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79798489 + 3678724 = 8933^2 + 1918^2 .

It is a cyclic number.

It is not a de Polignac number, because 83477213 - 2² = 83477209 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83477263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41738606 + 41738607.

It is an arithmetic number, because the mean of its divisors is an integer number (41738607).

Almost surely, 2^83477213 is an apocalyptic number.

It is an amenable number.

83477213 is a deficient number, since it is larger than the sum of its proper divisors (1).

83477213 is an equidigital number, since it uses as much as digits as its factorization.

83477213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 35.

The square root of 83477213 is about 9136.5865070058. The cubic root of 83477213 is about 437.0414687645.

The spelling of 83477213 in words is "eighty-three million, four hundred seventy-seven thousand, two hundred thirteen".