7742690 has 16 divisors (see below), whose sum is σ = 14670720. Its totient is φ = 2934000.

The previous prime is 7742689. The next prime is 7742699. The reversal of 7742690 is 962477.

It is a super-2 number, since 2×7742690² = 119898496872200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7742690.

It is not an unprimeable number, because it can be changed into a prime (7742699) 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, 20186 + ... + 20565.

It is an arithmetic number, because the mean of its divisors is an integer number (916920).

Almost surely, 2^7742690 is an apocalyptic number.

7742690 is a deficient number, since it is larger than the sum of its proper divisors (6928030).

7742690 is a wasteful number, since it uses less digits than its factorization.

7742690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40777.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 7742690 is about 2782.5689569173. The cubic root of 7742690 is about 197.8323411529.

The spelling of 7742690 in words is "seven million, seven hundred forty-two thousand, six hundred ninety".