7740740 has 24 divisors (see below), whose sum is σ = 18578112. Its totient is φ = 2653920.

The previous prime is 7740739. The next prime is 7740743. The reversal of 7740740 is 470477.

It is not an unprimeable number, because it can be changed into a prime (7740743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27506 + ... + 27785.

It is an arithmetic number, because the mean of its divisors is an integer number (774088).

Almost surely, 2^7740740 is an apocalyptic number.

7740740 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7740740 is an abundant number, since it is smaller than the sum of its proper divisors (10837372).

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

7740740 is a wasteful number, since it uses less digits than its factorization.

7740740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55307 (or 55305 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 29.

The square root of 7740740 is about 2782.2185392237. The cubic root of 7740740 is about 197.8157317034.

The spelling of 7740740 in words is "seven million, seven hundred forty thousand, seven hundred forty".