2660422651 has 4 divisors (see below), whose sum is σ = 2662232704. Its totient is φ = 2658612600.

The previous prime is 2660422649. The next prime is 2660422663. The reversal of 2660422651 is 1562240662.

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 2660422651 - 2¹ = 2660422649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2660422601) 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, 902820 + ... + 905761.

It is an arithmetic number, because the mean of its divisors is an integer number (665558176).

Almost surely, 2^2660422651 is an apocalyptic number.

2660422651 is a deficient number, since it is larger than the sum of its proper divisors (1810053).

2660422651 is a wasteful number, since it uses less digits than its factorization.

2660422651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1810052.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 2660422651 is about 51579.2850958599. The cubic root of 2660422651 is about 1385.6393631675.

The spelling of 2660422651 in words is "two billion, six hundred sixty million, four hundred twenty-two thousand, six hundred fifty-one".