91673012 has 6 divisors (see below), whose sum is σ = 160427778. Its totient is φ = 45836504.

The previous prime is 91673003. The next prime is 91673069. The reversal of 91673012 is 21037619.

It can be written as a sum of positive squares in only one way, i.e., 89226916 + 2446096 = 9446^2 + 1564^2 .

It is a super-2 number, since 2×91673012² = 16807882258304288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11459123 + ... + 11459130.

It is an arithmetic number, because the mean of its divisors is an integer number (26737963).

Almost surely, 2^91673012 is an apocalyptic number.

It is an amenable number.

91673012 is a deficient number, since it is larger than the sum of its proper divisors (68754766).

91673012 is a wasteful number, since it uses less digits than its factorization.

91673012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22918257 (or 22918255 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 91673012 is about 9574.6024460549. The cubic root of 91673012 is about 450.9002750647.

The spelling of 91673012 in words is "ninety-one million, six hundred seventy-three thousand, twelve".