90718406 has 4 divisors (see below), whose sum is σ = 136077612. Its totient is φ = 45359202.

The previous prime is 90718403. The next prime is 90718447. The reversal of 90718406 is 60481709.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90718403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22679600 + ... + 22679603.

It is an arithmetic number, because the mean of its divisors is an integer number (34019403).

Almost surely, 2^90718406 is an apocalyptic number.

90718406 is a deficient number, since it is larger than the sum of its proper divisors (45359206).

90718406 is a wasteful number, since it uses less digits than its factorization.

90718406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45359205.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 90718406 is about 9524.6210423302. The cubic root of 90718406 is about 449.3297115461.

The spelling of 90718406 in words is "ninety million, seven hundred eighteen thousand, four hundred six".