90697542 has 16 divisors (see below), whose sum is σ = 195348720. Its totient is φ = 27906912.

The previous prime is 90697531. The next prime is 90697543. The reversal of 90697542 is 24579609.

It is a junction number, because it is equal to n+sod(n) for n = 90697494 and 90697503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90697543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 581317 + ... + 581472.

It is an arithmetic number, because the mean of its divisors is an integer number (12209295).

Almost surely, 2^90697542 is an apocalyptic number.

90697542 is an abundant number, since it is smaller than the sum of its proper divisors (104651178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90697542 is a wasteful number, since it uses less digits than its factorization.

90697542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162807.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 90697542 is about 9523.5257126760. The cubic root of 90697542 is about 449.2952623301.

The spelling of 90697542 in words is "ninety million, six hundred ninety-seven thousand, five hundred forty-two".