7428691 has 2 divisors, whose sum is σ = 7428692. Its totient is φ = 7428690.

The previous prime is 7428683. The next prime is 7428697. The reversal of 7428691 is 1968247.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7428691 - 2³ = 7428683 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7428691.

It is not a weakly prime, because it can be changed into another prime (7428697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3714345 + 3714346.

It is an arithmetic number, because the mean of its divisors is an integer number (3714346).

Almost surely, 2^7428691 is an apocalyptic number.

7428691 is a deficient number, since it is larger than the sum of its proper divisors (1).

7428691 is an equidigital number, since it uses as much as digits as its factorization.

7428691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 37.

The square root of 7428691 is about 2725.5625107489. The cubic root of 7428691 is about 195.1210381577.

The spelling of 7428691 in words is "seven million, four hundred twenty-eight thousand, six hundred ninety-one".