3666730251 has 8 divisors (see below), whose sum is σ = 5046682624. Its totient is φ = 2365632360.

The previous prime is 3666730247. The next prime is 3666730261. The reversal of 3666730251 is 1520376663.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3666730251 - 2² = 3666730247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3666730201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19713511 + ... + 19713696.

It is an arithmetic number, because the mean of its divisors is an integer number (630835328).

Almost surely, 2^3666730251 is an apocalyptic number.

3666730251 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

3666730251 is a deficient number, since it is larger than the sum of its proper divisors (1379952373).

3666730251 is a wasteful number, since it uses less digits than its factorization.

3666730251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39427241.

The product of its (nonzero) digits is 136080, while the sum is 39.

The square root of 3666730251 is about 60553.5321100264. The cubic root of 3666730251 is about 1542.0305831688.

The spelling of 3666730251 in words is "three billion, six hundred sixty-six million, seven hundred thirty thousand, two hundred fifty-one".