90912070 has 8 divisors (see below), whose sum is σ = 163641744. Its totient is φ = 36364824.

The previous prime is 90912067. The next prime is 90912079. The reversal of 90912070 is 7021909.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90912079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4545594 + ... + 4545613.

It is an arithmetic number, because the mean of its divisors is an integer number (20455218).

Almost surely, 2^90912070 is an apocalyptic number.

90912070 is a deficient number, since it is larger than the sum of its proper divisors (72729674).

90912070 is a wasteful number, since it uses less digits than its factorization.

90912070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9091214.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 90912070 is about 9534.7821160213. The cubic root of 90912070 is about 449.6492245837.

Adding to 90912070 its reverse (7021909), we get a palindrome (97933979).

The spelling of 90912070 in words is "ninety million, nine hundred twelve thousand, seventy".