3666139701 has 32 divisors (see below), whose sum is σ = 5852848128. Its totient is φ = 1997075520.

The previous prime is 3666139621. The next prime is 3666139703. The reversal of 3666139701 is 1079316663.

3666139701 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3666139701 - 2¹⁴ = 3666123317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3666139703) 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, 1591 + ... + 85643.

It is an arithmetic number, because the mean of its divisors is an integer number (182901504).

Almost surely, 2^3666139701 is an apocalyptic number.

3666139701 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3666139701 is a deficient number, since it is larger than the sum of its proper divisors (2186708427).

3666139701 is a wasteful number, since it uses less digits than its factorization.

3666139701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84161.

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 3666139701 is about 60548.6556498160. The cubic root of 3666139701 is about 1541.9477941450.

The spelling of 3666139701 in words is "three billion, six hundred sixty-six million, one hundred thirty-nine thousand, seven hundred one".