612718416 has 60 divisors (see below), whose sum is σ = 1716610740. Its totient is φ = 204019200.

The previous prime is 612718411. The next prime is 612718423. The reversal of 612718416 is 614817216.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 313290000 + 299428416 = 17700^2 + 17304^2 .

It is a super-3 number, since 3×612718416³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612718411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 183966 + ... + 187266.

It is an arithmetic number, because the mean of its divisors is an integer number (28610179).

Almost surely, 2^612718416 is an apocalyptic number.

It is an amenable number.

612718416 is an abundant number, since it is smaller than the sum of its proper divisors (1103892324).

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

612718416 is a wasteful number, since it uses less digits than its factorization.

612718416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4604 (or 4595 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 612718416 is about 24753.1496177759. The cubic root of 612718416 is about 849.3505609031.

The spelling of 612718416 in words is "six hundred twelve million, seven hundred eighteen thousand, four hundred sixteen".