73491566 has 4 divisors (see below), whose sum is σ = 110237352. Its totient is φ = 36745782.

The previous prime is 73491553. The next prime is 73491577. The reversal of 73491566 is 66519437.

It is a semiprime because it is the product of two primes.

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, 18372890 + ... + 18372893.

It is an arithmetic number, because the mean of its divisors is an integer number (27559338).

Almost surely, 2^73491566 is an apocalyptic number.

73491566 is a deficient number, since it is larger than the sum of its proper divisors (36745786).

73491566 is a wasteful number, since it uses less digits than its factorization.

73491566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36745785.

The product of its digits is 136080, while the sum is 41.

The square root of 73491566 is about 8572.7222047609. The cubic root of 73491566 is about 418.8699136495.

The spelling of 73491566 in words is "seventy-three million, four hundred ninety-one thousand, five hundred sixty-six".