7651437685 has 4 divisors (see below), whose sum is σ = 9181725228. Its totient is φ = 6121150144.

The previous prime is 7651437683. The next prime is 7651437737. The reversal of 7651437685 is 5867341567.

It is a happy number.

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 915788644 + 6735649041 = 30262^2 + 82071^2 .

It is a cyclic number.

It is not a de Polignac number, because 7651437685 - 2¹ = 7651437683 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 (7651437683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 765143764 + ... + 765143773.

It is an arithmetic number, because the mean of its divisors is an integer number (2295431307).

Almost surely, 2^7651437685 is an apocalyptic number.

It is an amenable number.

7651437685 is a deficient number, since it is larger than the sum of its proper divisors (1530287543).

7651437685 is a wasteful number, since it uses less digits than its factorization.

7651437685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1530287542.

The product of its digits is 4233600, while the sum is 52.

The square root of 7651437685 is about 87472.4967346880. The cubic root of 7651437685 is about 1970.5207625469.

The spelling of 7651437685 in words is "seven billion, six hundred fifty-one million, four hundred thirty-seven thousand, six hundred eighty-five".