90690026 has 8 divisors (see below), whose sum is σ = 155468640. Its totient is φ = 38867148.

The previous prime is 90690011. The next prime is 90690029. The reversal of 90690026 is 62009609.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 90689974 and 90690001.

It is not an unprimeable number, because it can be changed into a prime (90690029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3238916 + ... + 3238943.

It is an arithmetic number, because the mean of its divisors is an integer number (19433580).

Almost surely, 2^90690026 is an apocalyptic number.

90690026 is a deficient number, since it is larger than the sum of its proper divisors (64778614).

90690026 is a wasteful number, since it uses less digits than its factorization.

90690026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6477868.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 90690026 is about 9523.1311027414. The cubic root of 90690026 is about 449.2828511283.

The spelling of 90690026 in words is "ninety million, six hundred ninety thousand, twenty-six".