90502693 has 2 divisors, whose sum is σ = 90502694. Its totient is φ = 90502692.

The previous prime is 90502663. The next prime is 90502697. The reversal of 90502693 is 39620509.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82846404 + 7656289 = 9102^2 + 2767^2 .

It is an emirp because it is prime and its reverse (39620509) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90502693 - 2¹⁷ = 90371621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90502697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45251346 + 45251347.

It is an arithmetic number, because the mean of its divisors is an integer number (45251347).

Almost surely, 2^90502693 is an apocalyptic number.

It is an amenable number.

90502693 is a deficient number, since it is larger than the sum of its proper divisors (1).

90502693 is an equidigital number, since it uses as much as digits as its factorization.

90502693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 90502693 is about 9513.2903351049. The cubic root of 90502693 is about 448.9732855801.

The spelling of 90502693 in words is "ninety million, five hundred two thousand, six hundred ninety-three".