66319037 has 4 divisors (see below), whose sum is σ = 66395196. Its totient is φ = 66242880.

The previous prime is 66319007. The next prime is 66319067. The reversal of 66319037 is 73091366.

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

It is an interprime number because it is at equal distance from previous prime (66319007) and next prime (66319067).

It can be written as a sum of positive squares in 2 ways, for example, as 34351321 + 31967716 = 5861^2 + 5654^2 .

It is a cyclic number.

It is not a de Polignac number, because 66319037 - 2¹⁰ = 66318013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66318988 and 66319006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66319007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36758 + ... + 38519.

It is an arithmetic number, because the mean of its divisors is an integer number (16598799).

Almost surely, 2^66319037 is an apocalyptic number.

It is an amenable number.

66319037 is a deficient number, since it is larger than the sum of its proper divisors (76159).

66319037 is an equidigital number, since it uses as much as digits as its factorization.

66319037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76158.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 66319037 is about 8143.6501029944. The cubic root of 66319037 is about 404.7741198394.

The spelling of 66319037 in words is "sixty-six million, three hundred nineteen thousand, thirty-seven".