91000062 has 12 divisors (see below), whose sum is σ = 197166840. Its totient is φ = 30333348.

The previous prime is 91000051. The next prime is 91000081. The reversal of 91000062 is 26000019.

It is a super-2 number, since 2×91000062² = 16562022568007688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 5055559 = 91000062 / (9 + 1 + 0 + 0 + 0 + 0 + 6 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 90999999 and 91000044.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2527762 + ... + 2527797.

It is an arithmetic number, because the mean of its divisors is an integer number (16430570).

Almost surely, 2^91000062 is an apocalyptic number.

91000062 is an abundant number, since it is smaller than the sum of its proper divisors (106166778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91000062 is a wasteful number, since it uses less digits than its factorization.

91000062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5055567 (or 5055564 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 91000062 is about 9539.3952638519. The cubic root of 91000062 is about 449.7942466786.

The spelling of 91000062 in words is "ninety-one million, sixty-two", and thus it is an aban number and an uban number.