61439650 has 36 divisors (see below), whose sum is σ = 116576802. Its totient is φ = 24090880.

The previous prime is 61439641. The next prime is 61439657. The reversal of 61439650 is 5693416.

It can be written as a sum of positive squares in 3 ways, for example, as 42889401 + 18550249 = 6549^2 + 4307^2 .

It is not an unprimeable number, because it can be changed into a prime (61439657) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 173874 + ... + 174226.

Almost surely, 2^61439650 is an apocalyptic number.

61439650 is a deficient number, since it is larger than the sum of its proper divisors (55137152).

61439650 is a wasteful number, since it uses less digits than its factorization.

61439650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 61439650 is about 7838.3448507960. The cubic root of 61439650 is about 394.5931826083.

The spelling of 61439650 in words is "sixty-one million, four hundred thirty-nine thousand, six hundred fifty".