7477961 has 2 divisors, whose sum is σ = 7477962. Its totient is φ = 7477960.

The previous prime is 7477927. The next prime is 7477979. The reversal of 7477961 is 1697747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7458361 + 19600 = 2731^2 + 140^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7477961 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 7³ + 4⁷ + 7⁵ + 7⁸ + 9 + 6⁸ + 1 .

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (7477991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3738980 + 3738981.

It is an arithmetic number, because the mean of its divisors is an integer number (3738981).

Almost surely, 2^7477961 is an apocalyptic number.

It is an amenable number.

7477961 is a deficient number, since it is larger than the sum of its proper divisors (1).

7477961 is an equidigital number, since it uses as much as digits as its factorization.

7477961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 74088, while the sum is 41.

The square root of 7477961 is about 2734.5860747104. The cubic root of 7477961 is about 195.5514611292.

The spelling of 7477961 in words is "seven million, four hundred seventy-seven thousand, nine hundred sixty-one".