90262687 has 2 divisors, whose sum is σ = 90262688. Its totient is φ = 90262686.

The previous prime is 90262663. The next prime is 90262693. The reversal of 90262687 is 78626209.

It is a strong prime.

It is an emirp because it is prime and its reverse (78626209) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90262687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90262637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45131343 + 45131344.

It is an arithmetic number, because the mean of its divisors is an integer number (45131344).

Almost surely, 2^90262687 is an apocalyptic number.

90262687 is a deficient number, since it is larger than the sum of its proper divisors (1).

90262687 is an equidigital number, since it uses as much as digits as its factorization.

90262687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 90262687 is about 9500.6677133768. The cubic root of 90262687 is about 448.5760536558.

The spelling of 90262687 in words is "ninety million, two hundred sixty-two thousand, six hundred eighty-seven".