899681073 has 16 divisors (see below), whose sum is σ = 1220256576. Its totient is φ = 589520960.

The previous prime is 899681071. The next prime is 899681093. The reversal of 899681073 is 370186998.

It is a cyclic number.

It is not a de Polignac number, because 899681073 - 2¹ = 899681071 is a prime.

It is a super-2 number, since 2×899681073² = 1618852066228862658, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (899681071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39883 + ... + 58223.

It is an arithmetic number, because the mean of its divisors is an integer number (76266036).

Almost surely, 2^899681073 is an apocalyptic number.

899681073 is a gapful number since it is divisible by the number (83) formed by its first and last digit.

It is an amenable number.

899681073 is a deficient number, since it is larger than the sum of its proper divisors (320575503).

899681073 is a wasteful number, since it uses less digits than its factorization.

899681073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18624.

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 899681073 is about 29994.6840790164. The cubic root of 899681073 is about 965.3753264530.

The spelling of 899681073 in words is "eight hundred ninety-nine million, six hundred eighty-one thousand, seventy-three".