90591646 has 8 divisors (see below), whose sum is σ = 136099440. Its totient is φ = 45225168.

The previous prime is 90591617. The next prime is 90591689. The reversal of 90591646 is 64619509.

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

It is a junction number, because it is equal to n+sod(n) for n = 90591599 and 90591608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33711 + ... + 36298.

It is an arithmetic number, because the mean of its divisors is an integer number (17012430).

Almost surely, 2^90591646 is an apocalyptic number.

90591646 is a deficient number, since it is larger than the sum of its proper divisors (45507794).

90591646 is a wasteful number, since it uses less digits than its factorization.

90591646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70658.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 90591646 is about 9517.9643832072. The cubic root of 90591646 is about 449.1203325608.

The spelling of 90591646 in words is "ninety million, five hundred ninety-one thousand, six hundred forty-six".