61599534 has 16 divisors (see below), whose sum is σ = 130446288. Its totient is φ = 19325312.

The previous prime is 61599533. The next prime is 61599541. The reversal of 61599534 is 43599516.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61599533) 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, 301857 + ... + 302060.

It is an arithmetic number, because the mean of its divisors is an integer number (8152893).

Almost surely, 2^61599534 is an apocalyptic number.

61599534 is an abundant number, since it is smaller than the sum of its proper divisors (68846754).

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

61599534 is a wasteful number, since it uses less digits than its factorization.

61599534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603939.

The product of its digits is 145800, while the sum is 42.

The square root of 61599534 is about 7848.5370611344. The cubic root of 61599534 is about 394.9351685511.

The spelling of 61599534 in words is "sixty-one million, five hundred ninety-nine thousand, five hundred thirty-four".