90687514 has 4 divisors (see below), whose sum is σ = 136031274. Its totient is φ = 45343756.

The previous prime is 90687511. The next prime is 90687517. The reversal of 90687514 is 41578609.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (90687511) and next prime (90687517).

It can be written as a sum of positive squares in only one way, i.e., 53538489 + 37149025 = 7317^2 + 6095^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (90687511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22671877 + ... + 22671880.

Almost surely, 2^90687514 is an apocalyptic number.

90687514 is a deficient number, since it is larger than the sum of its proper divisors (45343760).

90687514 is a wasteful number, since it uses less digits than its factorization.

90687514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45343759.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 90687514 is about 9522.9992124330. Note that the first 3 decimals coincide. The cubic root of 90687514 is about 449.2787028995.

The spelling of 90687514 in words is "ninety million, six hundred eighty-seven thousand, five hundred fourteen".