1061520717 has 8 divisors (see below), whose sum is σ = 1418631424. Its totient is φ = 706045248.

The previous prime is 1061520697. The next prime is 1061520721. The reversal of 1061520717 is 7170251601.

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

It is not a de Polignac number, because 1061520717 - 2¹⁶ = 1061455181 is a prime.

It is a super-2 number, since 2×1061520717² = 2253652465240388178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061520797) 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, 407293 + ... + 409890.

It is an arithmetic number, because the mean of its divisors is an integer number (177328928).

Almost surely, 2^1061520717 is an apocalyptic number.

It is an amenable number.

1061520717 is a deficient number, since it is larger than the sum of its proper divisors (357110707).

1061520717 is an equidigital number, since it uses as much as digits as its factorization.

1061520717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817619.

The product of its (nonzero) digits is 2940, while the sum is 30.

The square root of 1061520717 is about 32580.9870476632. The cubic root of 1061520717 is about 1020.1001814327.

The spelling of 1061520717 in words is "one billion, sixty-one million, five hundred twenty thousand, seven hundred seventeen".