6139690 has 8 divisors (see below), whose sum is σ = 11051460. Its totient is φ = 2455872.

The previous prime is 6139687. The next prime is 6139691. The reversal of 6139690 is 969316.

It can be written as a sum of positive squares in 2 ways, for example, as 5948721 + 190969 = 2439^2 + 437^2 .

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

It is a super-2 number, since 2×6139690² = 75391586592200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6139691) 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, 306975 + ... + 306994.

Almost surely, 2^6139690 is an apocalyptic number.

6139690 is a deficient number, since it is larger than the sum of its proper divisors (4911770).

6139690 is a wasteful number, since it uses less digits than its factorization.

6139690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613976.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 6139690 is about 2477.8397849740. The cubic root of 6139690 is about 183.1114413736. Note that the first 3 decimals are identical.

The spelling of 6139690 in words is "six million, one hundred thirty-nine thousand, six hundred ninety".