739648821 has 16 divisors (see below), whose sum is σ = 996779520. Its totient is φ = 487823040.

The previous prime is 739648813. The next prime is 739648859. The reversal of 739648821 is 128846937.

It is not a de Polignac number, because 739648821 - 2³ = 739648813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (739648621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280891 + ... + 283511.

It is an arithmetic number, because the mean of its divisors is an integer number (62298720).

Almost surely, 2^739648821 is an apocalyptic number.

It is an amenable number.

739648821 is a deficient number, since it is larger than the sum of its proper divisors (257130699).

739648821 is a wasteful number, since it uses less digits than its factorization.

739648821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3596.

The product of its digits is 580608, while the sum is 48.

The square root of 739648821 is about 27196.4854530875. The cubic root of 739648821 is about 904.3610646373.

The spelling of 739648821 in words is "seven hundred thirty-nine million, six hundred forty-eight thousand, eight hundred twenty-one".