73491641 has 4 divisors (see below), whose sum is σ = 74696484. Its totient is φ = 72286800.

The previous prime is 73491637. The next prime is 73491653. The reversal of 73491641 is 14619437.

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

It can be written as a sum of positive squares in 2 ways, for example, as 32262400 + 41229241 = 5680^2 + 6421^2 .

It is a cyclic number.

It is not a de Polignac number, because 73491641 - 2² = 73491637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (73491631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 602330 + ... + 602451.

It is an arithmetic number, because the mean of its divisors is an integer number (18674121).

Almost surely, 2^73491641 is an apocalyptic number.

It is an amenable number.

73491641 is a deficient number, since it is larger than the sum of its proper divisors (1204843).

73491641 is a wasteful number, since it uses less digits than its factorization.

73491641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204842.

The product of its digits is 18144, while the sum is 35.

The square root of 73491641 is about 8572.7265790996. The cubic root of 73491641 is about 418.8700561386.

The spelling of 73491641 in words is "seventy-three million, four hundred ninety-one thousand, six hundred forty-one".