90571697 has 8 divisors (see below), whose sum is σ = 92114880. Its totient is φ = 89041680.

The previous prime is 90571601. The next prime is 90571721. The reversal of 90571697 is 79617509.

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

It is a cyclic number.

It is not a de Polignac number, because 90571697 - 2¹⁰ = 90570673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90571097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11108 + ... + 17450.

It is an arithmetic number, because the mean of its divisors is an integer number (11514360).

Almost surely, 2^90571697 is an apocalyptic number.

It is an amenable number.

90571697 is a deficient number, since it is larger than the sum of its proper divisors (1543183).

90571697 is a wasteful number, since it uses less digits than its factorization.

90571697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6583.

The product of its (nonzero) digits is 119070, while the sum is 44.

The square root of 90571697 is about 9516.9163598300. The cubic root of 90571697 is about 449.0873635192.

It can be divided in two parts, 90 and 571697, that added together give a cube (571787 = 83³).

The spelling of 90571697 in words is "ninety million, five hundred seventy-one thousand, six hundred ninety-seven".