741987821 has 8 divisors (see below), whose sum is σ = 766550784. Its totient is φ = 717464160.

The previous prime is 741987817. The next prime is 741987913. The reversal of 741987821 is 128789147.

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 741987821 - 2² = 741987817 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (741947821) 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, 31361 + ... + 49673.

It is an arithmetic number, because the mean of its divisors is an integer number (95818848).

Almost surely, 2^741987821 is an apocalyptic number.

It is an amenable number.

741987821 is a deficient number, since it is larger than the sum of its proper divisors (24562963).

741987821 is a wasteful number, since it uses less digits than its factorization.

741987821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19651.

The product of its digits is 225792, while the sum is 47.

The square root of 741987821 is about 27239.4533902573. The cubic root of 741987821 is about 905.3133520079.

The spelling of 741987821 in words is "seven hundred forty-one million, nine hundred eighty-seven thousand, eight hundred twenty-one".