61704491 has 6 divisors (see below), whose sum is σ = 62566740. Its totient is φ = 60853968.

The previous prime is 61704479. The next prime is 61704497. The reversal of 61704491 is 19440716.

It is not a de Polignac number, because 61704491 - 2⁶ = 61704427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61704497) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 461 + ... + 11118.

It is an arithmetic number, because the mean of its divisors is an integer number (10427790).

Almost surely, 2^61704491 is an apocalyptic number.

61704491 is a deficient number, since it is larger than the sum of its proper divisors (862249).

61704491 is an equidigital number, since it uses as much as digits as its factorization.

61704491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11725 (or 11652 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 61704491 is about 7855.2206207082. The cubic root of 61704491 is about 395.1593460608.

The spelling of 61704491 in words is "sixty-one million, seven hundred four thousand, four hundred ninety-one".