61709494 has 16 divisors (see below), whose sum is σ = 115405056. Its totient is φ = 24042600.

The previous prime is 61709471. The next prime is 61709497. The reversal of 61709494 is 49490716.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61709497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200202 + ... + 200509.

It is an arithmetic number, because the mean of its divisors is an integer number (7212816).

Almost surely, 2^61709494 is an apocalyptic number.

61709494 is a deficient number, since it is larger than the sum of its proper divisors (53695562).

61709494 is a wasteful number, since it uses less digits than its factorization.

61709494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400731.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 61709494 is about 7855.5390648892. The cubic root of 61709494 is about 395.1700256118.

The spelling of 61709494 in words is "sixty-one million, seven hundred nine thousand, four hundred ninety-four".