90897206 has 4 divisors (see below), whose sum is σ = 136345812. Its totient is φ = 45448602.

The previous prime is 90897203. The next prime is 90897211. The reversal of 90897206 is 60279809.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90897203) 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 as a sum of consecutive naturals, namely, 22724300 + ... + 22724303.

It is an arithmetic number, because the mean of its divisors is an integer number (34086453).

Almost surely, 2^90897206 is an apocalyptic number.

90897206 is a deficient number, since it is larger than the sum of its proper divisors (45448606).

90897206 is a wasteful number, since it uses less digits than its factorization.

90897206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45448605.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 90897206 is about 9534.0026221939. The cubic root of 90897206 is about 449.6247175688.

The spelling of 90897206 in words is "ninety million, eight hundred ninety-seven thousand, two hundred six".