91794537 has 12 divisors (see below), whose sum is σ = 132730884. Its totient is φ = 61132320.

The previous prime is 91794499. The next prime is 91794539. The reversal of 91794537 is 73549719.

It can be written as a sum of positive squares in 2 ways, for example, as 81432576 + 10361961 = 9024^2 + 3219^2 .

It is not a de Polignac number, because 91794537 - 2¹² = 91790441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91794492 and 91794501.

It is not an unprimeable number, because it can be changed into a prime (91794539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4743 + ... + 14355.

It is an arithmetic number, because the mean of its divisors is an integer number (11060907).

Almost surely, 2^91794537 is an apocalyptic number.

It is an amenable number.

91794537 is a deficient number, since it is larger than the sum of its proper divisors (40936347).

91794537 is a wasteful number, since it uses less digits than its factorization.

91794537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10680 (or 10677 counting only the distinct ones).

The product of its digits is 238140, while the sum is 45.

The square root of 91794537 is about 9580.9465607528. The cubic root of 91794537 is about 451.0994302269.

The spelling of 91794537 in words is "ninety-one million, seven hundred ninety-four thousand, five hundred thirty-seven".