90682891 has 8 divisors (see below), whose sum is σ = 97732544. Its totient is φ = 83643840.

The previous prime is 90682883. The next prime is 90682897. The reversal of 90682891 is 19828609.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 90682891 - 2³ = 90682883 is a prime.

It is a super-4 number, since 4×90682891⁴ (a number of 33 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (90682897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31390 + ... + 34156.

It is an arithmetic number, because the mean of its divisors is an integer number (12216568).

Almost surely, 2^90682891 is an apocalyptic number.

90682891 is a deficient number, since it is larger than the sum of its proper divisors (7049653).

90682891 is a wasteful number, since it uses less digits than its factorization.

90682891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5301.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 90682891 is about 9522.7564811876. The cubic root of 90682891 is about 449.2710684390.

The spelling of 90682891 in words is "ninety million, six hundred eighty-two thousand, eight hundred ninety-one".