1712660521 has 8 divisors (see below), whose sum is σ = 2012076864. Its totient is φ = 1437197520.

The previous prime is 1712660507. The next prime is 1712660539. The reversal of 1712660521 is 1250662171.

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

It is not a de Polignac number, because 1712660521 - 2⁹ = 1712660009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1712660581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5988181 + ... + 5988466.

It is an arithmetic number, because the mean of its divisors is an integer number (251509608).

Almost surely, 2^1712660521 is an apocalyptic number.

1712660521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1712660521 is a deficient number, since it is larger than the sum of its proper divisors (299416343).

1712660521 is a wasteful number, since it uses less digits than its factorization.

1712660521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11976671.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 1712660521 is about 41384.3028333208. The cubic root of 1712660521 is about 1196.4386357022.

The spelling of 1712660521 in words is "one billion, seven hundred twelve million, six hundred sixty thousand, five hundred twenty-one".