742064643 has 12 divisors (see below), whose sum is σ = 1078069200. Its totient is φ = 491849136.

The previous prime is 742064621. The next prime is 742064657. The reversal of 742064643 is 346460247.

742064643 is a `hidden beast` number, since 7 + 4 + 2 + 0 + 6 + 4 + 643 = 666.

It is not a de Polignac number, because 742064643 - 2⁵ = 742064611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 742064598 and 742064607.

It is not an unprimeable number, because it can be changed into a prime (742064693) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 236743 + ... + 239856.

It is an arithmetic number, because the mean of its divisors is an integer number (89839100).

Almost surely, 2^742064643 is an apocalyptic number.

742064643 is a deficient number, since it is larger than the sum of its proper divisors (336004557).

742064643 is a wasteful number, since it uses less digits than its factorization.

742064643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476778 (or 476775 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 36.

The square root of 742064643 is about 27240.8634775038. The cubic root of 742064643 is about 905.3445949206.

The spelling of 742064643 in words is "seven hundred forty-two million, sixty-four thousand, six hundred forty-three".