90062197 has 4 divisors (see below), whose sum is σ = 93167820. Its totient is φ = 86956576.

The previous prime is 90062183. The next prime is 90062201. The reversal of 90062197 is 79126009.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79126009 = 353 ⋅224153.

It can be written as a sum of positive squares in 2 ways, for example, as 30371121 + 59691076 = 5511^2 + 7726^2 .

It is a cyclic number.

It is not a de Polignac number, because 90062197 - 2⁷ = 90062069 is a prime.

It is a super-2 number, since 2×90062197² = 16222398656933618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90062897) 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 in 3 ways as a sum of consecutive naturals, for example, 1552768 + ... + 1552825.

It is an arithmetic number, because the mean of its divisors is an integer number (23291955).

Almost surely, 2^90062197 is an apocalyptic number.

It is an amenable number.

90062197 is a deficient number, since it is larger than the sum of its proper divisors (3105623).

90062197 is a wasteful number, since it uses less digits than its factorization.

90062197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3105622.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 90062197 is about 9490.1104840776. The cubic root of 90062197 is about 448.2436841919.

The spelling of 90062197 in words is "ninety million, sixty-two thousand, one hundred ninety-seven".