7253684657 has 2 divisors, whose sum is σ = 7253684658. Its totient is φ = 7253684656.

The previous prime is 7253684623. The next prime is 7253684671. The reversal of 7253684657 is 7564863527.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5375675761 + 1878008896 = 73319^2 + 43336^2 .

It is a cyclic number.

It is not a de Polignac number, because 7253684657 - 2¹⁸ = 7253422513 is a prime.

It is a super-2 number, since 2×7253684657² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7253684599 and 7253684608.

It is not a weakly prime, because it can be changed into another prime (7253687657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3626842328 + 3626842329.

It is an arithmetic number, because the mean of its divisors is an integer number (3626842329).

Almost surely, 2^7253684657 is an apocalyptic number.

It is an amenable number.

7253684657 is a deficient number, since it is larger than the sum of its proper divisors (1).

7253684657 is an equidigital number, since it uses as much as digits as its factorization.

7253684657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8467200, while the sum is 53.

The square root of 7253684657 is about 85168.5661321124. The cubic root of 7253684657 is about 1935.7661464548.

The spelling of 7253684657 in words is "seven billion, two hundred fifty-three million, six hundred eighty-four thousand, six hundred fifty-seven".