743616 has 42 divisors (see below), whose sum is σ = 2133092. Its totient is φ = 247680.

The previous prime is 743609. The next prime is 743657. The reversal of 743616 is 616347.

743616 is a `hidden beast` number, since 7 + 43 + 616 = 666.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 743616.

It is an unprimeable number.

743616 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70 + ... + 1221.

2⁷⁴³⁶¹⁶ 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 743616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1066546).

743616 is an abundant number, since it is smaller than the sum of its proper divisors (1389476).

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

743616 is a wasteful number, since it uses less digits than its factorization.

743616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309 (or 1296 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 743616 is about 862.3317227146. The cubic root of 743616 is about 90.5975058887.

The spelling of 743616 in words is "seven hundred forty-three thousand, six hundred sixteen".