90681542 has 8 divisors (see below), whose sum is σ = 155454096. Its totient is φ = 38863512.

The previous prime is 90681527. The next prime is 90681559. The reversal of 90681542 is 24518609.

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

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, 3238613 + ... + 3238640.

It is an arithmetic number, because the mean of its divisors is an integer number (19431762).

Almost surely, 2^90681542 is an apocalyptic number.

90681542 is a deficient number, since it is larger than the sum of its proper divisors (64772554).

90681542 is a wasteful number, since it uses less digits than its factorization.

90681542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6477262.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 90681542 is about 9522.6856505925. The cubic root of 90681542 is about 449.2688406403.

The spelling of 90681542 in words is "ninety million, six hundred eighty-one thousand, five hundred forty-two".