91654840 has 32 divisors (see below), whose sum is σ = 206562960. Its totient is φ = 36601600.

The previous prime is 91654831. The next prime is 91654847. The reversal of 91654840 is 4845619.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 91654840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91654847) 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, 28935 + ... + 31945.

Almost surely, 2^91654840 is an apocalyptic number.

It is an amenable number.

91654840 is an abundant number, since it is smaller than the sum of its proper divisors (114908120).

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

91654840 is a wasteful number, since it uses less digits than its factorization.

91654840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3783 (or 3779 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 91654840 is about 9573.6534301175. The cubic root of 91654840 is about 450.8704796681.

The spelling of 91654840 in words is "ninety-one million, six hundred fifty-four thousand, eight hundred forty".