7622561 has 2 divisors, whose sum is σ = 7622562. Its totient is φ = 7622560.

The previous prime is 7622519. The next prime is 7622581. The reversal of 7622561 is 1652267.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7529536 + 93025 = 2744^2 + 305^2 .

It is an emirp because it is prime and its reverse (1652267) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7622561 - 2¹⁴ = 7606177 is a prime.

It is a Sophie Germain prime.

It is a pancake number, because a pancake can be divided into 7622561 parts by 3904 straight cuts.

It is a Curzon number.

It is equal to p₅₁₅₉₈₁ and since 7622561 and 515981 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (7622581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3811280 + 3811281.

It is an arithmetic number, because the mean of its divisors is an integer number (3811281).

Almost surely, 2^7622561 is an apocalyptic number.

It is an amenable number.

7622561 is a deficient number, since it is larger than the sum of its proper divisors (1).

7622561 is an equidigital number, since it uses as much as digits as its factorization.

7622561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 29.

The square root of 7622561 is about 2760.8985856058. The cubic root of 7622561 is about 196.8038708698.

It can be divided in two parts, 76225 and 61, that multiplied together give a triangular number (4649725 = T₃₀₄₉).

The spelling of 7622561 in words is "seven million, six hundred twenty-two thousand, five hundred sixty-one".