7958641 has 2 divisors, whose sum is σ = 7958642. Its totient is φ = 7958640.

The previous prime is 7958627. The next prime is 7958689. The reversal of 7958641 is 1468597.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7952400 + 6241 = 2820^2 + 79^2 .

It is a cyclic number.

It is not a de Polignac number, because 7958641 - 2¹¹ = 7956593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7958594 and 7958603.

It is not a weakly prime, because it can be changed into another prime (7950641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3979320 + 3979321.

It is an arithmetic number, because the mean of its divisors is an integer number (3979321).

Almost surely, 2^7958641 is an apocalyptic number.

It is an amenable number.

7958641 is a deficient number, since it is larger than the sum of its proper divisors (1).

7958641 is an equidigital number, since it uses as much as digits as its factorization.

7958641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 40.

The square root of 7958641 is about 2821.1063432632. The cubic root of 7958641 is about 199.6547460080.

The spelling of 7958641 in words is "seven million, nine hundred fifty-eight thousand, six hundred forty-one".