3666700251 has 16 divisors (see below), whose sum is σ = 5435132800. Its totient is φ = 2443123944.

The previous prime is 3666700249. The next prime is 3666700277. The reversal of 3666700251 is 1520076663.

It is not a de Polignac number, because 3666700251 - 2¹ = 3666700249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3666700211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14040 + ... + 86778.

It is an arithmetic number, because the mean of its divisors is an integer number (339695800).

Almost surely, 2^3666700251 is an apocalyptic number.

3666700251 is a deficient number, since it is larger than the sum of its proper divisors (1768432549).

3666700251 is a wasteful number, since it uses less digits than its factorization.

3666700251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74615 (or 74609 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 3666700251 is about 60553.2843948204. The cubic root of 3666700251 is about 1542.0263776923.

The spelling of 3666700251 in words is "three billion, six hundred sixty-six million, seven hundred thousand, two hundred fifty-one".