66474337 has 2 divisors, whose sum is σ = 66474338. Its totient is φ = 66474336.

The previous prime is 66474319. The next prime is 66474371. The reversal of 66474337 is 73347466.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66194496 + 279841 = 8136^2 + 529^2 .

It is a cyclic number.

It is not a de Polignac number, because 66474337 - 2¹⁵ = 66441569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66474337.

It is not a weakly prime, because it can be changed into another prime (66474377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33237168 + 33237169.

It is an arithmetic number, because the mean of its divisors is an integer number (33237169).

Almost surely, 2^66474337 is an apocalyptic number.

It is an amenable number.

66474337 is a deficient number, since it is larger than the sum of its proper divisors (1).

66474337 is an equidigital number, since it uses as much as digits as its factorization.

66474337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 40.

The square root of 66474337 is about 8153.1795638266. The cubic root of 66474337 is about 405.0898281671.

The spelling of 66474337 in words is "sixty-six million, four hundred seventy-four thousand, three hundred thirty-seven".