90698477 has 2 divisors, whose sum is σ = 90698478. Its totient is φ = 90698476.

The previous prime is 90698471. The next prime is 90698483. The reversal of 90698477 is 77489609.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (90698471) and next prime (90698483).

It can be written as a sum of positive squares in only one way, i.e., 88755241 + 1943236 = 9421^2 + 1394^2 .

It is a cyclic number.

It is not a de Polignac number, because 90698477 - 2⁸ = 90698221 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 (90698471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45349238 + 45349239.

It is an arithmetic number, because the mean of its divisors is an integer number (45349239).

Almost surely, 2^90698477 is an apocalyptic number.

It is an amenable number.

90698477 is a deficient number, since it is larger than the sum of its proper divisors (1).

90698477 is an equidigital number, since it uses as much as digits as its factorization.

90698477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 90698477 is about 9523.5748015123. The cubic root of 90698477 is about 449.2968062515.

The spelling of 90698477 in words is "ninety million, six hundred ninety-eight thousand, four hundred seventy-seven".