90862173 has 6 divisors (see below), whose sum is σ = 131245374. Its totient is φ = 60574776.

The previous prime is 90862169. The next prime is 90862223. The reversal of 90862173 is 37126809.

It can be written as a sum of positive squares in only one way, i.e., 57198969 + 33663204 = 7563^2 + 5802^2 .

It is not a de Polignac number, because 90862173 - 2² = 90862169 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90862873) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5047890 + ... + 5047907.

It is an arithmetic number, because the mean of its divisors is an integer number (21874229).

Almost surely, 2^90862173 is an apocalyptic number.

It is an amenable number.

90862173 is a deficient number, since it is larger than the sum of its proper divisors (40383201).

90862173 is a wasteful number, since it uses less digits than its factorization.

90862173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10095803 (or 10095800 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 90862173 is about 9532.1651790136. The cubic root of 90862173 is about 449.5669463512.

The spelling of 90862173 in words is "ninety million, eight hundred sixty-two thousand, one hundred seventy-three".