601623653 has 4 divisors (see below), whose sum is σ = 604741068. Its totient is φ = 598506240.

The previous prime is 601623643. The next prime is 601623697. The reversal of 601623653 is 356326106.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 278990209 + 322633444 = 16703^2 + 17962^2 .

It is a cyclic number.

It is not a de Polignac number, because 601623653 - 2⁴ = 601623637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (601623643) 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, 1558418 + ... + 1558803.

It is an arithmetic number, because the mean of its divisors is an integer number (151185267).

Almost surely, 2^601623653 is an apocalyptic number.

It is an amenable number.

601623653 is a deficient number, since it is larger than the sum of its proper divisors (3117415).

601623653 is a wasteful number, since it uses less digits than its factorization.

601623653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3117414.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 601623653 is about 24528.0177144424. The cubic root of 601623653 is about 844.1927811651.

Adding to 601623653 its reverse (356326106), we get a palindrome (957949759).

The spelling of 601623653 in words is "six hundred one million, six hundred twenty-three thousand, six hundred fifty-three".