602991021 has 8 divisors (see below), whose sum is σ = 822685600. Its totient is φ = 392645232.

The previous prime is 602991007. The next prime is 602991061. The reversal of 602991021 is 120199206.

It is a happy number.

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

It is not a de Polignac number, because 602991021 - 2⁷ = 602990893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 602991021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (602991061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2337046 + ... + 2337303.

It is an arithmetic number, because the mean of its divisors is an integer number (102835700).

Almost surely, 2^602991021 is an apocalyptic number.

It is an amenable number.

602991021 is a deficient number, since it is larger than the sum of its proper divisors (219694579).

602991021 is a wasteful number, since it uses less digits than its factorization.

602991021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4674395.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 602991021 is about 24555.8754883633. The cubic root of 602991021 is about 844.8318566506.

The spelling of 602991021 in words is "six hundred two million, nine hundred ninety-one thousand, twenty-one".