671005742 has 48 divisors (see below), whose sum is σ = 1178480016. Its totient is φ = 285331200.

The previous prime is 671005663. The next prime is 671005787. The reversal of 671005742 is 247500176.

It is a junction number, because it is equal to n+sod(n) for n = 671005699 and 671005708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 867668 + ... + 868440.

It is an arithmetic number, because the mean of its divisors is an integer number (24551667).

Almost surely, 2^671005742 is an apocalyptic number.

671005742 is a deficient number, since it is larger than the sum of its proper divisors (507474274).

671005742 is a wasteful number, since it uses less digits than its factorization.

671005742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025 (or 1014 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 671005742 is about 25903.7785274658. The cubic root of 671005742 is about 875.4716334129.

The spelling of 671005742 in words is "six hundred seventy-one million, five thousand, seven hundred forty-two".