620545121 has 8 divisors (see below), whose sum is σ = 710379264. Its totient is φ = 531007200.

The previous prime is 620545091. The next prime is 620545151. The reversal of 620545121 is 121545026.

It is an interprime number because it is at equal distance from previous prime (620545091) and next prime (620545151).

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 620545121 - 2²² = 616350817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (620545151) 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, 69545 + ... + 77958.

It is an arithmetic number, because the mean of its divisors is an integer number (88797408).

Almost surely, 2^620545121 is an apocalyptic number.

It is an amenable number.

620545121 is a deficient number, since it is larger than the sum of its proper divisors (89834143).

620545121 is a wasteful number, since it uses less digits than its factorization.

620545121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148111.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 620545121 is about 24910.7430840591. The cubic root of 620545121 is about 852.9517314189.

The spelling of 620545121 in words is "six hundred twenty million, five hundred forty-five thousand, one hundred twenty-one".