7649390 has 48 divisors (see below), whose sum is σ = 16325712. Its totient is φ = 2572416.

The previous prime is 7649377. The next prime is 7649393. The reversal of 7649390 is 939467.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7649393) 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 23 ways as a sum of consecutive naturals, for example, 32714 + ... + 32946.

It is an arithmetic number, because the mean of its divisors is an integer number (340119).

Almost surely, 2^7649390 is an apocalyptic number.

7649390 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

7649390 is an abundant number, since it is smaller than the sum of its proper divisors (8676322).

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

7649390 is a wasteful number, since it uses less digits than its factorization.

7649390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 7649390 is about 2765.7530620068. The cubic root of 7649390 is about 197.0344962652.

The spelling of 7649390 in words is "seven million, six hundred forty-nine thousand, three hundred ninety".