61405410 has 64 divisors (see below), whose sum is σ = 163036800. Its totient is φ = 14676480.

The previous prime is 61405403. The next prime is 61405417. The reversal of 61405410 is 1450416.

It is an interprime number because it is at equal distance from previous prime (61405403) and next prime (61405417).

It is not an unprimeable number, because it can be changed into a prime (61405417) 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, 22816 + ... + 25364.

It is an arithmetic number, because the mean of its divisors is an integer number (2547450).

Almost surely, 2^61405410 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61405410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81518400).

61405410 is an abundant number, since it is smaller than the sum of its proper divisors (101631390).

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

61405410 is a wasteful number, since it uses less digits than its factorization.

61405410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2643.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 61405410 is about 7836.1604118344. The cubic root of 61405410 is about 394.5198674055.

Adding to 61405410 its reverse (1450416), we get a palindrome (62855826).

The spelling of 61405410 in words is "sixty-one million, four hundred five thousand, four hundred ten".