6937521061 has 4 divisors (see below), whose sum is σ = 6937696800. Its totient is φ = 6937345324.

The previous prime is 6937521049. The next prime is 6937521083. The reversal of 6937521061 is 1601257396.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6937521061 - 2⁹ = 6937520549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6937521011) 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, 1950 + ... + 117808.

It is an arithmetic number, because the mean of its divisors is an integer number (1734424200).

Almost surely, 2^6937521061 is an apocalyptic number.

It is an amenable number.

6937521061 is a deficient number, since it is larger than the sum of its proper divisors (175739).

6937521061 is a wasteful number, since it uses less digits than its factorization.

6937521061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175738.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 6937521061 is about 83291.7826739229. The cubic root of 6937521061 is about 1907.2228364543. Note that the first 3 decimals are identical.

The spelling of 6937521061 in words is "six billion, nine hundred thirty-seven million, five hundred twenty-one thousand, sixty-one".