7640377 has 2 divisors, whose sum is σ = 7640378. Its totient is φ = 7640376.

The previous prime is 7640371. The next prime is 7640411. The reversal of 7640377 is 7730467.

It is a happy number.

It is an a-pointer prime, because the next prime (7640411) can be obtained adding 7640377 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5669161 + 1971216 = 2381^2 + 1404^2 .

It is a cyclic number.

It is not a de Polignac number, because 7640377 - 2⁷ = 7640249 is a prime.

It is not a weakly prime, because it can be changed into another prime (7640371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3820188 + 3820189.

It is an arithmetic number, because the mean of its divisors is an integer number (3820189).

Almost surely, 2^7640377 is an apocalyptic number.

It is an amenable number.

7640377 is a deficient number, since it is larger than the sum of its proper divisors (1).

7640377 is an equidigital number, since it uses as much as digits as its factorization.

7640377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24696, while the sum is 34.

The square root of 7640377 is about 2764.1231882823. The cubic root of 7640377 is about 196.9570796410.

The spelling of 7640377 in words is "seven million, six hundred forty thousand, three hundred seventy-seven".