6721610741 has 8 divisors (see below), whose sum is σ = 6752078784. Its totient is φ = 6691164480.

The previous prime is 6721610713. The next prime is 6721610761. The reversal of 6721610741 is 1470161276.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6721610741 - 2¹⁰ = 6721609717 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6721610761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1115960 + ... + 1121966.

It is an arithmetic number, because the mean of its divisors is an integer number (844009848).

Almost surely, 2^6721610741 is an apocalyptic number.

It is an amenable number.

6721610741 is a deficient number, since it is larger than the sum of its proper divisors (30468043).

6721610741 is a wasteful number, since it uses less digits than its factorization.

6721610741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10891.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 6721610741 is about 81985.4300531503. The cubic root of 6721610741 is about 1887.2283535563.

The spelling of 6721610741 in words is "six billion, seven hundred twenty-one million, six hundred ten thousand, seven hundred forty-one".