620733461 has 4 divisors (see below), whose sum is σ = 657247212. Its totient is φ = 584219712.

The previous prime is 620733457. The next prime is 620733469. The reversal of 620733461 is 164337026.

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 244140625 + 376592836 = 15625^2 + 19406^2 .

It is a cyclic number.

It is not a de Polignac number, because 620733461 - 2² = 620733457 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 (620733469) 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, 18256850 + ... + 18256883.

It is an arithmetic number, because the mean of its divisors is an integer number (164311803).

Almost surely, 2^620733461 is an apocalyptic number.

It is an amenable number.

620733461 is a deficient number, since it is larger than the sum of its proper divisors (36513751).

620733461 is a wasteful number, since it uses less digits than its factorization.

620733461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36513750.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 620733461 is about 24914.5230939707. The cubic root of 620733461 is about 853.0380150611.

The spelling of 620733461 in words is "six hundred twenty million, seven hundred thirty-three thousand, four hundred sixty-one".