90702737 has 2 divisors, whose sum is σ = 90702738. Its totient is φ = 90702736.

The previous prime is 90702679. The next prime is 90702739. The reversal of 90702737 is 73720709.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49434961 + 41267776 = 7031^2 + 6424^2 .

It is a cyclic number.

It is not a de Polignac number, because 90702737 - 2⁶ = 90702673 is a prime.

Together with 90702739, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 90702697 and 90702706.

It is not a weakly prime, because it can be changed into another prime (90702739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45351368 + 45351369.

It is an arithmetic number, because the mean of its divisors is an integer number (45351369).

Almost surely, 2^90702737 is an apocalyptic number.

It is an amenable number.

90702737 is a deficient number, since it is larger than the sum of its proper divisors (1).

90702737 is an equidigital number, since it uses as much as digits as its factorization.

90702737 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18522, while the sum is 35.

The square root of 90702737 is about 9523.7984543983. The cubic root of 90702737 is about 449.3038404542.

The spelling of 90702737 in words is "ninety million, seven hundred two thousand, seven hundred thirty-seven".