609636542 has 16 divisors (see below), whose sum is σ = 937811952. Its totient is φ = 297064320.

The previous prime is 609636539. The next prime is 609636553. The reversal of 609636542 is 245636906.

It is a self number, because there is not a number n which added to its sum of digits gives 609636542.

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, 31958 + ... + 47334.

It is an arithmetic number, because the mean of its divisors is an integer number (58613247).

Almost surely, 2^609636542 is an apocalyptic number.

609636542 is a deficient number, since it is larger than the sum of its proper divisors (328175410).

609636542 is a wasteful number, since it uses less digits than its factorization.

609636542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15883.

The product of its (nonzero) digits is 233280, while the sum is 41.

The square root of 609636542 is about 24690.8189819617. The cubic root of 609636542 is about 847.9241349227.

The spelling of 609636542 in words is "six hundred nine million, six hundred thirty-six thousand, five hundred forty-two".