671607873 has 6 divisors (see below), whose sum is σ = 970100274. Its totient is φ = 447738576.

The previous prime is 671607847. The next prime is 671607887. The reversal of 671607873 is 378706176.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 432348849 + 239259024 = 20793^2 + 15468^2 .

It is not a de Polignac number, because 671607873 - 2¹⁶ = 671542337 is a prime.

It is a super-3 number, since 3×671607873³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (671607823) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37311540 + ... + 37311557.

It is an arithmetic number, because the mean of its divisors is an integer number (161683379).

Almost surely, 2^671607873 is an apocalyptic number.

It is an amenable number.

671607873 is a deficient number, since it is larger than the sum of its proper divisors (298492401).

671607873 is a wasteful number, since it uses less digits than its factorization.

671607873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74623103 (or 74623100 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 45.

The square root of 671607873 is about 25915.3983762550. The cubic root of 671607873 is about 875.7334250170.

The spelling of 671607873 in words is "six hundred seventy-one million, six hundred seven thousand, eight hundred seventy-three".