999010651 has 2 divisors, whose sum is σ = 999010652. Its totient is φ = 999010650.

The previous prime is 999010643. The next prime is 999010697. The reversal of 999010651 is 156010999.

It is a weak prime.

It is an emirp because it is prime and its reverse (156010999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999010651 - 2³ = 999010643 is a prime.

It is a super-2 number, since 2×999010651² = 1996044561622887602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (999010351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499505325 + 499505326.

It is an arithmetic number, because the mean of its divisors is an integer number (499505326).

Almost surely, 2^999010651 is an apocalyptic number.

999010651 is a deficient number, since it is larger than the sum of its proper divisors (1).

999010651 is an equidigital number, since it uses as much as digits as its factorization.

999010651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21870, while the sum is 40.

The square root of 999010651 is about 31607.1297494727. The cubic root of 999010651 is about 999.6701081834.

The spelling of 999010651 in words is "nine hundred ninety-nine million, ten thousand, six hundred fifty-one".