7420663 has 4 divisors (see below), whose sum is σ = 7429968. Its totient is φ = 7411360.

The previous prime is 7420661. The next prime is 7420681. The reversal of 7420663 is 3660247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3660247 = 857 ⋅4271.

It is a cyclic number.

It is not a de Polignac number, because 7420663 - 2¹ = 7420661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7420661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3331 + ... + 5092.

It is an arithmetic number, because the mean of its divisors is an integer number (1857492).

Almost surely, 2^7420663 is an apocalyptic number.

7420663 is a deficient number, since it is larger than the sum of its proper divisors (9305).

7420663 is an equidigital number, since it uses as much as digits as its factorization.

7420663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9304.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 7420663 is about 2724.0893891354. The cubic root of 7420663 is about 195.0507253529.

The spelling of 7420663 in words is "seven million, four hundred twenty thousand, six hundred sixty-three".