611620512 has 48 divisors (see below), whose sum is σ = 1606933440. Its totient is φ = 203692032.

The previous prime is 611620501. The next prime is 611620553. The reversal of 611620512 is 215026116.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146064 + ... + 150192.

It is an arithmetic number, because the mean of its divisors is an integer number (33477780).

Almost surely, 2^611620512 is an apocalyptic number.

It is an amenable number.

611620512 is an abundant number, since it is smaller than the sum of its proper divisors (995312928).

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

611620512 is a wasteful number, since it uses less digits than its factorization.

611620512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5685 (or 5677 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 611620512 is about 24730.9626177389. The cubic root of 611620512 is about 848.8429525787.

Adding to 611620512 its reverse (215026116), we get a palindrome (826646628).

The spelling of 611620512 in words is "six hundred eleven million, six hundred twenty thousand, five hundred twelve".