671765001 has 16 divisors (see below), whose sum is σ = 913036800. Its totient is φ = 439211520.

The previous prime is 671764991. The next prime is 671765011. The reversal of 671765001 is 100567176.

It is an interprime number because it is at equal distance from previous prime (671764991) and next prime (671765011).

It is not a de Polignac number, because 671765001 - 2¹⁴ = 671748617 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (671765011) 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, 59400 + ... + 69798.

It is an arithmetic number, because the mean of its divisors is an integer number (57064800).

Almost surely, 2^671765001 is an apocalyptic number.

671765001 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

671765001 is a deficient number, since it is larger than the sum of its proper divisors (241271799).

671765001 is a wasteful number, since it uses less digits than its factorization.

671765001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10816.

The product of its (nonzero) digits is 8820, while the sum is 33.

The square root of 671765001 is about 25918.4297556777. The cubic root of 671765001 is about 875.8017146234.

The spelling of 671765001 in words is "six hundred seventy-one million, seven hundred sixty-five thousand, one".