611216517 has 8 divisors (see below), whose sum is σ = 826119424. Its totient is φ = 401895648.

The previous prime is 611216509. The next prime is 611216531. The reversal of 611216517 is 715612116.

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

It is not a de Polignac number, because 611216517 - 2³ = 611216509 is a prime.

It is a super-2 number, since 2×611216517² = 747171261307222578, 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 (611216597) 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, 1395253 + ... + 1395690.

It is an arithmetic number, because the mean of its divisors is an integer number (103264928).

Almost surely, 2^611216517 is an apocalyptic number.

It is an amenable number.

611216517 is a deficient number, since it is larger than the sum of its proper divisors (214902907).

611216517 is a wasteful number, since it uses less digits than its factorization.

611216517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791019.

The product of its digits is 2520, while the sum is 30.

The square root of 611216517 is about 24722.7934708034. The cubic root of 611216517 is about 848.6560153986.

The spelling of 611216517 in words is "six hundred eleven million, two hundred sixteen thousand, five hundred seventeen".