602638261 has 4 divisors (see below), whose sum is σ = 605160000. Its totient is φ = 600116524.

The previous prime is 602638189. The next prime is 602638301. The reversal of 602638261 is 162836206.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 602638261 - 2²³ = 594249653 is a prime.

It is a super-2 number, since 2×602638261² = 726345747242208242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (602636261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1260511 + ... + 1260988.

It is an arithmetic number, because the mean of its divisors is an integer number (151290000).

Almost surely, 2^602638261 is an apocalyptic number.

It is an amenable number.

602638261 is a deficient number, since it is larger than the sum of its proper divisors (2521739).

602638261 is a wasteful number, since it uses less digits than its factorization.

602638261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2521738.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 602638261 is about 24548.6916351972. The cubic root of 602638261 is about 844.6670775132.

The spelling of 602638261 in words is "six hundred two million, six hundred thirty-eight thousand, two hundred sixty-one".