7666493 has 2 divisors, whose sum is σ = 7666494. Its totient is φ = 7666492.

The previous prime is 7666487. The next prime is 7666501. The reversal of 7666493 is 3946667.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5484964 + 2181529 = 2342^2 + 1477^2 .

It is a cyclic number.

It is not a de Polignac number, because 7666493 - 2¹² = 7662397 is a prime.

It is a super-2 number, since 2×7666493² = 117550229838098, 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 7666493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7666423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3833246 + 3833247.

It is an arithmetic number, because the mean of its divisors is an integer number (3833247).

Almost surely, 2^7666493 is an apocalyptic number.

It is an amenable number.

7666493 is a deficient number, since it is larger than the sum of its proper divisors (1).

7666493 is an equidigital number, since it uses as much as digits as its factorization.

7666493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 41.

The square root of 7666493 is about 2768.8432602804. The cubic root of 7666493 is about 197.1812344397.

The spelling of 7666493 in words is "seven million, six hundred sixty-six thousand, four hundred ninety-three".