7640066 has 16 divisors (see below), whose sum is σ = 13203456. Its totient is φ = 3247776.

The previous prime is 7640053. The next prime is 7640069. The reversal of 7640066 is 6600467.

It is not an unprimeable number, because it can be changed into a prime (7640069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371 + ... + 3926.

It is an arithmetic number, because the mean of its divisors is an integer number (825216).

Almost surely, 2^7640066 is an apocalyptic number.

7640066 is a deficient number, since it is larger than the sum of its proper divisors (5563390).

7640066 is a wasteful number, since it uses less digits than its factorization.

7640066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4433.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 7640066 is about 2764.0669311723. The cubic root of 7640066 is about 196.9544072387.

The spelling of 7640066 in words is "seven million, six hundred forty thousand, sixty-six".