61450665 has 32 divisors (see below), whose sum is σ = 104924160. Its totient is φ = 30603264.

The previous prime is 61450663. The next prime is 61450679. The reversal of 61450665 is 56605416.

It is not a de Polignac number, because 61450665 - 2¹ = 61450663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61450661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34056 + ... + 35814.

It is an arithmetic number, because the mean of its divisors is an integer number (3278880).

Almost surely, 2^61450665 is an apocalyptic number.

It is an amenable number.

61450665 is a deficient number, since it is larger than the sum of its proper divisors (43473495).

61450665 is a wasteful number, since it uses less digits than its factorization.

61450665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1921.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 61450665 is about 7839.0474548889. The cubic root of 61450665 is about 394.6167623009.

The spelling of 61450665 in words is "sixty-one million, four hundred fifty thousand, six hundred sixty-five".