615260020 has 12 divisors (see below), whose sum is σ = 1292046084. Its totient is φ = 246104000.

The previous prime is 615259999. The next prime is 615260029. The reversal of 615260020 is 20062516.

615260020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 330730596 + 284529424 = 18186^2 + 16868^2 .

It is a junction number, because it is equal to n+sod(n) for n = 615259973 and 615260000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (615260029) 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, 15381481 + ... + 15381520.

It is an arithmetic number, because the mean of its divisors is an integer number (107670507).

Almost surely, 2^615260020 is an apocalyptic number.

It is an amenable number.

615260020 is an abundant number, since it is smaller than the sum of its proper divisors (676786064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

615260020 is a wasteful number, since it uses less digits than its factorization.

615260020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30763010 (or 30763008 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 615260020 is about 24804.4354904521. The cubic root of 615260020 is about 850.5233317060.

The spelling of 615260020 in words is "six hundred fifteen million, two hundred sixty thousand, twenty".