61660002 has 16 divisors (see below), whose sum is σ = 123500160. Its totient is φ = 20523312.

The previous prime is 61659989. The next prime is 61660007. The reversal of 61660002 is 20006616.

It is not an unprimeable number, because it can be changed into a prime (61660007) 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, 2833 + ... + 11460.

It is an arithmetic number, because the mean of its divisors is an integer number (7718760).

Almost surely, 2^61660002 is an apocalyptic number.

61660002 is an abundant number, since it is smaller than the sum of its proper divisors (61840158).

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

61660002 is a wasteful number, since it uses less digits than its factorization.

61660002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15017.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 61660002 is about 7852.3882991100. The cubic root of 61660002 is about 395.0643531320.

Adding to 61660002 its reverse (20006616), we get a palindrome (81666618).

The spelling of 61660002 in words is "sixty-one million, six hundred sixty thousand, two".