73013837 has 4 divisors (see below), whose sum is σ = 78630300. Its totient is φ = 67397376.

The previous prime is 73013833. The next prime is 73013873. The reversal of 73013837 is 73831037.

It is a happy number.

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 47803396 + 25210441 = 6914^2 + 5021^2 .

It is a cyclic number.

It is not a de Polignac number, because 73013837 - 2² = 73013833 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73013833) 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, 2808212 + ... + 2808237.

It is an arithmetic number, because the mean of its divisors is an integer number (19657575).

Almost surely, 2^73013837 is an apocalyptic number.

It is an amenable number.

73013837 is a deficient number, since it is larger than the sum of its proper divisors (5616463).

73013837 is a wasteful number, since it uses less digits than its factorization.

73013837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5616462.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 73013837 is about 8544.8134561265. The cubic root of 73013837 is about 417.9603241418.

The spelling of 73013837 in words is "seventy-three million, thirteen thousand, eight hundred thirty-seven".