3666064761 has 6 divisors (see below), whose sum is σ = 5295426890. Its totient is φ = 2444043168.

The previous prime is 3666064729. The next prime is 3666064781. The reversal of 3666064761 is 1674606663.

It can be written as a sum of positive squares in only one way, i.e., 3465559161 + 200505600 = 58869^2 + 14160^2 .

It is not a de Polignac number, because 3666064761 - 2⁵ = 3666064729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3666064711) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 203670256 + ... + 203670273.

Almost surely, 2^3666064761 is an apocalyptic number.

It is an amenable number.

3666064761 is a deficient number, since it is larger than the sum of its proper divisors (1629362129).

3666064761 is a wasteful number, since it uses less digits than its factorization.

3666064761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407340535 (or 407340532 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The square root of 3666064761 is about 60548.0368054985. The cubic root of 3666064761 is about 1541.9372876937.

The spelling of 3666064761 in words is "three billion, six hundred sixty-six million, sixty-four thousand, seven hundred sixty-one".