3666709971 has 32 divisors (see below), whose sum is σ = 5543173440. Its totient is φ = 2394662400.

The previous prime is 3666709903. The next prime is 3666709973. The reversal of 3666709971 is 1799076663.

It is not a de Polignac number, because 3666709971 - 2³¹ = 1519226323 is a prime.

It is a super-2 number, since 2×3666709971² = 26889524022861641682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3666709973) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1173291 + ... + 1176411.

It is an arithmetic number, because the mean of its divisors is an integer number (173224170).

Almost surely, 2^3666709971 is an apocalyptic number.

3666709971 is a deficient number, since it is larger than the sum of its proper divisors (1876463469).

3666709971 is a wasteful number, since it uses less digits than its factorization.

3666709971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4004 (or 3998 counting only the distinct ones).

The product of its (nonzero) digits is 2571912, while the sum is 54.

The square root of 3666709971 is about 60553.3646546581. The cubic root of 3666709971 is about 1542.0277402692.

The spelling of 3666709971 in words is "three billion, six hundred sixty-six million, seven hundred nine thousand, nine hundred seventy-one".