7749145 has 8 divisors (see below), whose sum is σ = 9313920. Its totient is φ = 6189360.

The previous prime is 7749121. The next prime is 7749149. The reversal of 7749145 is 5419477.

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

It is not a de Polignac number, because 7749145 - 2⁵ = 7749113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7749149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5526 + ... + 6784.

It is an arithmetic number, because the mean of its divisors is an integer number (1164240).

Almost surely, 2^7749145 is an apocalyptic number.

It is an amenable number.

7749145 is a deficient number, since it is larger than the sum of its proper divisors (1564775).

7749145 is a wasteful number, since it uses less digits than its factorization.

7749145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2495.

The product of its digits is 35280, while the sum is 37.

The square root of 7749145 is about 2783.7286146462. The cubic root of 7749145 is about 197.8873028028.

The spelling of 7749145 in words is "seven million, seven hundred forty-nine thousand, one hundred forty-five".