742665616 has 80 divisors (see below), whose sum is σ = 1888450560. Its totient is φ = 274112640.

The previous prime is 742665601. The next prime is 742665661. The reversal of 742665616 is 616566247.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7545 + ... + 39271.

It is an arithmetic number, because the mean of its divisors is an integer number (23605632).

Almost surely, 2^742665616 is an apocalyptic number.

742665616 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 742665616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (944225280).

742665616 is an abundant number, since it is smaller than the sum of its proper divisors (1145784944).

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

742665616 is a wasteful number, since it uses less digits than its factorization.

742665616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31772 (or 31766 counting only the distinct ones).

The product of its digits is 362880, while the sum is 43.

The square root of 742665616 is about 27251.8919710174. The cubic root of 742665616 is about 905.5889316052.

The spelling of 742665616 in words is "seven hundred forty-two million, six hundred sixty-five thousand, six hundred sixteen".