6764138746 has 8 divisors (see below), whose sum is σ = 10154157300. Its totient is φ = 3379419648.

The previous prime is 6764138741. The next prime is 6764138761. The reversal of 6764138746 is 6478314676.

It can be written as a sum of positive squares in 2 ways, for example, as 6633288025 + 130850721 = 81445^2 + 11439^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 6764138693 and 6764138702.

It is not an unprimeable number, because it can be changed into a prime (6764138741) 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, 1321671 + ... + 1326778.

Almost surely, 2^6764138746 is an apocalyptic number.

6764138746 is a deficient number, since it is larger than the sum of its proper divisors (3390018554).

6764138746 is a wasteful number, since it uses less digits than its factorization.

6764138746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2649728.

The product of its digits is 4064256, while the sum is 52.

The square root of 6764138746 is about 82244.3842824542. The cubic root of 6764138746 is about 1891.2001882095.

The spelling of 6764138746 in words is "six billion, seven hundred sixty-four million, one hundred thirty-eight thousand, seven hundred forty-six".