6749550 has 72 divisors (see below), whose sum is σ = 18541224. Its totient is φ = 1759680.

The previous prime is 6749531. The next prime is 6749563. The reversal of 6749550 is 559476.

6749550 is a `hidden beast` number, since 67 + 49 + 550 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 23709 + ... + 23991.

It is an arithmetic number, because the mean of its divisors is an integer number (257517).

Almost surely, 2^6749550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6749550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9270612).

6749550 is an abundant number, since it is smaller than the sum of its proper divisors (11791674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6749550 is a wasteful number, since it uses less digits than its factorization.

6749550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 6749550 is about 2597.9896073695. The cubic root of 6749550 is about 188.9839576541.

The spelling of 6749550 in words is "six million, seven hundred forty-nine thousand, five hundred fifty".