7662427261 has 4 divisors (see below), whose sum is σ = 7767392092. Its totient is φ = 7557462432.

The previous prime is 7662427219. The next prime is 7662427277. The reversal of 7662427261 is 1627242667.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1481480100 + 6180947161 = 38490^2 + 78619^2 .

It is a cyclic number.

It is not a de Polignac number, because 7662427261 - 2⁷ = 7662427133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7662427211) 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, 52482306 + ... + 52482451.

It is an arithmetic number, because the mean of its divisors is an integer number (1941848023).

Almost surely, 2^7662427261 is an apocalyptic number.

It is an amenable number.

7662427261 is a deficient number, since it is larger than the sum of its proper divisors (104964831).

7662427261 is a wasteful number, since it uses less digits than its factorization.

7662427261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104964830.

The product of its digits is 338688, while the sum is 43.

The square root of 7662427261 is about 87535.2915171932. The cubic root of 7662427261 is about 1971.4637151102.

The spelling of 7662427261 in words is "seven billion, six hundred sixty-two million, four hundred twenty-seven thousand, two hundred sixty-one".