1671000705 has 32 divisors (see below), whose sum is σ = 3240731520. Its totient is φ = 810181440.

The previous prime is 1671000701. The next prime is 1671000743. The reversal of 1671000705 is 5070001761.

It is not a de Polignac number, because 1671000705 - 2² = 1671000701 is a prime.

It is a super-2 number, since 2×1671000705² = 5584486712220994050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1671000701) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 561142 + ... + 564111.

It is an arithmetic number, because the mean of its divisors is an integer number (101272860).

Almost surely, 2^1671000705 is an apocalyptic number.

1671000705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1671000705 is a deficient number, since it is larger than the sum of its proper divisors (1569730815).

1671000705 is a wasteful number, since it uses less digits than its factorization.

1671000705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125278 (or 1125272 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 27.

The square root of 1671000705 is about 40877.8754951869. The cubic root of 1671000705 is about 1186.6579260796.

The spelling of 1671000705 in words is "one billion, six hundred seventy-one million, seven hundred five", and thus it is an aban number.