7640002651 has 4 divisors (see below), whose sum is σ = 7661646072. Its totient is φ = 7618359232.

The previous prime is 7640002639. The next prime is 7640002729. The reversal of 7640002651 is 1562000467.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 7640002651 - 2¹³ = 7639994459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7640002631) 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, 10821181 + ... + 10821886.

It is an arithmetic number, because the mean of its divisors is an integer number (1915411518).

Almost surely, 2^7640002651 is an apocalyptic number.

7640002651 is a deficient number, since it is larger than the sum of its proper divisors (21643421).

7640002651 is a wasteful number, since it uses less digits than its factorization.

7640002651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21643420.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 7640002651 is about 87407.1086983204. The cubic root of 7640002651 is about 1969.5386287610.

The spelling of 7640002651 in words is "seven billion, six hundred forty million, two thousand, six hundred fifty-one".