1016660651 has 4 divisors (see below), whose sum is σ = 1060863312. Its totient is φ = 972457992.

The previous prime is 1016660599. The next prime is 1016660657. The reversal of 1016660651 is 1560666101.

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 1016660651 - 2¹⁸ = 1016398507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1016660657) 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, 22101296 + ... + 22101341.

It is an arithmetic number, because the mean of its divisors is an integer number (265215828).

Almost surely, 2^1016660651 is an apocalyptic number.

1016660651 is a deficient number, since it is larger than the sum of its proper divisors (44202661).

1016660651 is an equidigital number, since it uses as much as digits as its factorization.

1016660651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44202660.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1016660651 is about 31885.1164495286. The cubic root of 1016660651 is about 1005.5229907498.

The spelling of 1016660651 in words is "one billion, sixteen million, six hundred sixty thousand, six hundred fifty-one".