741639 has 8 divisors (see below), whose sum is σ = 994032. Its totient is φ = 491840.

The previous prime is 741599. The next prime is 741641. The reversal of 741639 is 936147.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 741639 - 2⁹ = 741127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (741679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169 + ... + 1229.

It is an arithmetic number, because the mean of its divisors is an integer number (124254).

2⁷⁴¹⁶³⁹ is an apocalyptic number.

741639 is a deficient number, since it is larger than the sum of its proper divisors (252393).

741639 is a wasteful number, since it uses less digits than its factorization.

741639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297.

The product of its digits is 4536, while the sum is 30.

The square root of 741639 is about 861.1846491897. The cubic root of 741639 is about 90.5171462074.

The spelling of 741639 in words is "seven hundred forty-one thousand, six hundred thirty-nine".