61660446 has 16 divisors (see below), whose sum is σ = 124707600. Its totient is φ = 20322368.

The previous prime is 61660441. The next prime is 61660471. The reversal of 61660446 is 64406616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61660441) 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, 57201 + ... + 58268.

It is an arithmetic number, because the mean of its divisors is an integer number (7794225).

Almost surely, 2^61660446 is an apocalyptic number.

61660446 is an abundant number, since it is smaller than the sum of its proper divisors (63047154).

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

61660446 is a wasteful number, since it uses less digits than its factorization.

61660446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115563.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 61660446 is about 7852.4165707125. The cubic root of 61660446 is about 395.0653013867.

The spelling of 61660446 in words is "sixty-one million, six hundred sixty thousand, four hundred forty-six".