61816337 has 4 divisors (see below), whose sum is σ = 67436016. Its totient is φ = 56196660.

The previous prime is 61816331. The next prime is 61816351. The reversal of 61816337 is 73361816.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61816337 - 2¹² = 61812241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61816297 and 61816306.

It is not an unprimeable number, because it can be changed into a prime (61816331) 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, 2809823 + ... + 2809844.

It is an arithmetic number, because the mean of its divisors is an integer number (16859004).

Almost surely, 2^61816337 is an apocalyptic number.

It is an amenable number.

61816337 is a deficient number, since it is larger than the sum of its proper divisors (5619679).

61816337 is a wasteful number, since it uses less digits than its factorization.

61816337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5619678.

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

The square root of 61816337 is about 7862.3366119748. The cubic root of 61816337 is about 395.3979581642.

The spelling of 61816337 in words is "sixty-one million, eight hundred sixteen thousand, three hundred thirty-seven".