61496409 has 16 divisors (see below), whose sum is σ = 88461632. Its totient is φ = 37775808.

The previous prime is 61496333. The next prime is 61496447. The reversal of 61496409 is 90469416.

It is not a de Polignac number, because 61496409 - 2⁹ = 61495897 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (61497409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28482 + ... + 30564.

It is an arithmetic number, because the mean of its divisors is an integer number (5528852).

Almost surely, 2^61496409 is an apocalyptic number.

It is an amenable number.

61496409 is a deficient number, since it is larger than the sum of its proper divisors (26965223).

61496409 is a wasteful number, since it uses less digits than its factorization.

61496409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2856.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 61496409 is about 7841.9646135391. The cubic root of 61496409 is about 394.7146558543.

The spelling of 61496409 in words is "sixty-one million, four hundred ninety-six thousand, four hundred nine".