90684742 has 8 divisors (see below), whose sum is σ = 136533600. Its totient is φ = 45173544.

The previous prime is 90684733. The next prime is 90684751. The reversal of 90684742 is 24748609.

It is an interprime number because it is at equal distance from previous prime (90684733) and next prime (90684751).

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

It is a junction number, because it is equal to n+sod(n) for n = 90684695 and 90684704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83742 + ... + 84817.

It is an arithmetic number, because the mean of its divisors is an integer number (17066700).

Almost surely, 2^90684742 is an apocalyptic number.

90684742 is a deficient number, since it is larger than the sum of its proper divisors (45848858).

90684742 is a wasteful number, since it uses less digits than its factorization.

90684742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168830.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 90684742 is about 9522.8536689377. The cubic root of 90684742 is about 449.2741252268.

The spelling of 90684742 in words is "ninety million, six hundred eighty-four thousand, seven hundred forty-two".