671212497 has 8 divisors (see below), whose sum is σ = 910118880. Its totient is φ = 439890560.

The previous prime is 671212483. The next prime is 671212543. The reversal of 671212497 is 794212176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 671212497 - 2⁴ = 671212481 is a prime.

It is a super-2 number, since 2×671212497² = 901052432257950018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (671212417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1895904 + ... + 1896257.

It is an arithmetic number, because the mean of its divisors is an integer number (113764860).

Almost surely, 2^671212497 is an apocalyptic number.

It is an amenable number.

671212497 is a deficient number, since it is larger than the sum of its proper divisors (238906383).

671212497 is a wasteful number, since it uses less digits than its factorization.

671212497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3792223.

The product of its digits is 42336, while the sum is 39.

The square root of 671212497 is about 25907.7690471411. The cubic root of 671212497 is about 875.5615430009.

The spelling of 671212497 in words is "six hundred seventy-one million, two hundred twelve thousand, four hundred ninety-seven".