611611616 has 96 divisors (see below), whose sum is σ = 1507403520. Its totient is φ = 237312000.

The previous prime is 611611613. The next prime is 611611633. The reversal of 611611616 is 616116116.

It is a super-2 number, since 2×611611616² = 748137537652262912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611611613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 987755 + ... + 988373.

It is an arithmetic number, because the mean of its divisors is an integer number (15702120).

Almost surely, 2^611611616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 611611616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (753701760).

611611616 is an abundant number, since it is smaller than the sum of its proper divisors (895791904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

611611616 is a wasteful number, since it uses less digits than its factorization.

611611616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048 (or 1040 counting only the distinct ones).

The product of its digits is 1296, while the sum is 29.

The square root of 611611616 is about 24730.7827615706. The cubic root of 611611616 is about 848.8388370945.

The spelling of 611611616 in words is "six hundred eleven million, six hundred eleven thousand, six hundred sixteen".