61463610 has 120 divisors (see below), whose sum is σ = 179358300. Its totient is φ = 15095808.

The previous prime is 61463603. The next prime is 61463621. The reversal of 61463610 is 1636416.

61463610 is a `hidden beast` number, since 6 + 1 + 46 + 3 + 610 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 8450649 + 53012961 = 2907^2 + 7281^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 136666 + ... + 137114.

Almost surely, 2^61463610 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61463610, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89679150).

61463610 is an abundant number, since it is smaller than the sum of its proper divisors (117894690).

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

61463610 is a wasteful number, since it uses less digits than its factorization.

61463610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494 (or 472 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 61463610 is about 7839.8730857074. The cubic root of 61463610 is about 394.6444699226.

The spelling of 61463610 in words is "sixty-one million, four hundred sixty-three thousand, six hundred ten".