6701661431 has 4 divisors (see below), whose sum is σ = 6702003000. Its totient is φ = 6701319864.

The previous prime is 6701661397. The next prime is 6701661433. The reversal of 6701661431 is 1341661076.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6701661431 - 2⁶ = 6701661367 is a prime.

It is a super-2 number, since 2×6701661431² = 89824531871505935522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6701661391 and 6701661400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6701661433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139436 + ... + 181233.

It is an arithmetic number, because the mean of its divisors is an integer number (1675500750).

Almost surely, 2^6701661431 is an apocalyptic number.

6701661431 is a deficient number, since it is larger than the sum of its proper divisors (341569).

6701661431 is a wasteful number, since it uses less digits than its factorization.

6701661431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341568.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 6701661431 is about 81863.6758947459. The cubic root of 6701661431 is about 1885.3594457918.

The spelling of 6701661431 in words is "six billion, seven hundred one million, six hundred sixty-one thousand, four hundred thirty-one".