830977805 has 16 divisors (see below), whose sum is σ = 1146458880. Its totient is φ = 566397312.

The previous prime is 830977801. The next prime is 830977837. The reversal of 830977805 is 508779038.

It is a cyclic number.

It is not a de Polignac number, because 830977805 - 2² = 830977801 is a prime.

It is a super-2 number, since 2×830977805² = 1381048224805236050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 830977805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (830977801) 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, 65240 + ... + 76929.

It is an arithmetic number, because the mean of its divisors is an integer number (71653680).

Almost surely, 2^830977805 is an apocalyptic number.

It is an amenable number.

830977805 is a deficient number, since it is larger than the sum of its proper divisors (315481075).

830977805 is a wasteful number, since it uses less digits than its factorization.

830977805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142348.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 830977805 is about 28826.6856402189. The cubic root of 830977805 is about 940.1485373390.

The spelling of 830977805 in words is "eight hundred thirty million, nine hundred seventy-seven thousand, eight hundred five".