69990090 has 32 divisors (see below), whose sum is σ = 168397056. Its totient is φ = 18617280.

The previous prime is 69990077. The next prime is 69990131. The reversal of 69990090 is 9009996.

It is a super-2 number, since 2×69990090² = 9797225396416200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10224 + ... + 15636.

It is an arithmetic number, because the mean of its divisors is an integer number (5262408).

Almost surely, 2^69990090 is an apocalyptic number.

69990090 is an abundant number, since it is smaller than the sum of its proper divisors (98406966).

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

69990090 is a wasteful number, since it uses less digits than its factorization.

69990090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5854.

The product of its (nonzero) digits is 39366, while the sum is 42.

The square root of 69990090 is about 8366.0080086024. The cubic root of 69990090 is about 412.1090805214.

The spelling of 69990090 in words is "sixty-nine million, nine hundred ninety thousand, ninety".