612587540 has 24 divisors (see below), whose sum is σ = 1321203912. Its totient is φ = 238412160.

The previous prime is 612587527. The next prime is 612587557. The reversal of 612587540 is 45785216.

It can be written as a sum of positive squares in 4 ways, for example, as 274101136 + 338486404 = 16556^2 + 18398^2 .

It is a junction number, because it is equal to n+sod(n) for n = 612587494 and 612587503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413171 + ... + 414650.

It is an arithmetic number, because the mean of its divisors is an integer number (55050163).

Almost surely, 2^612587540 is an apocalyptic number.

It is an amenable number.

612587540 is an abundant number, since it is smaller than the sum of its proper divisors (708616372).

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

612587540 is a wasteful number, since it uses less digits than its factorization.

612587540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827867 (or 827865 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 612587540 is about 24750.5058534164. The cubic root of 612587540 is about 849.2900831390.

The spelling of 612587540 in words is "six hundred twelve million, five hundred eighty-seven thousand, five hundred forty".