6749864890 has 16 divisors (see below), whose sum is σ = 12227146632. Its totient is φ = 2682748224.

The previous prime is 6749864879. The next prime is 6749864899. The reversal of 6749864890 is 984689476.

It can be written as a sum of positive squares in 4 ways, for example, as 3513051441 + 3236813449 = 59271^2 + 56893^2 .

It is not an unprimeable number, because it can be changed into a prime (6749864899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2148069 + ... + 2151208.

Almost surely, 2^6749864890 is an apocalyptic number.

6749864890 is a deficient number, since it is larger than the sum of its proper divisors (5477281742).

6749864890 is a wasteful number, since it uses less digits than its factorization.

6749864890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4299441.

The product of its (nonzero) digits is 20901888, while the sum is 61.

The square root of 6749864890 is about 82157.5613683853. The cubic root of 6749864890 is about 1889.8689652817.

The spelling of 6749864890 in words is "six billion, seven hundred forty-nine million, eight hundred sixty-four thousand, eight hundred ninety".