7264842757 has 4 divisors (see below), whose sum is σ = 7266555180. Its totient is φ = 7263130336.

The previous prime is 7264842749. The next prime is 7264842791. The reversal of 7264842757 is 7572484627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7572484627 = 41 ⋅184694747.

It can be written as a sum of positive squares in 2 ways, for example, as 2502600676 + 4762242081 = 50026^2 + 69009^2 .

It is a cyclic number.

It is not a de Polignac number, because 7264842757 - 2³ = 7264842749 is a prime.

It is a super-2 number, since 2×7264842757² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7264842727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 849832 + ... + 858337.

It is an arithmetic number, because the mean of its divisors is an integer number (1816638795).

Almost surely, 2^7264842757 is an apocalyptic number.

It is an amenable number.

7264842757 is a deficient number, since it is larger than the sum of its proper divisors (1712423).

7264842757 is a wasteful number, since it uses less digits than its factorization.

7264842757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712422.

The product of its digits is 5268480, while the sum is 52.

The square root of 7264842757 is about 85234.0469354823. The cubic root of 7264842757 is about 1936.7582126697.

The spelling of 7264842757 in words is "seven billion, two hundred sixty-four million, eight hundred forty-two thousand, seven hundred fifty-seven".