61709455 has 8 divisors (see below), whose sum is σ = 75066192. Its totient is φ = 48691008.

The previous prime is 61709447. The next prime is 61709471. The reversal of 61709455 is 55490716.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61709455 - 2³ = 61709447 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84169 + ... + 84898.

It is an arithmetic number, because the mean of its divisors is an integer number (9383274).

Almost surely, 2^61709455 is an apocalyptic number.

61709455 is a deficient number, since it is larger than the sum of its proper divisors (13356737).

61709455 is a wasteful number, since it uses less digits than its factorization.

61709455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169145.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 61709455 is about 7855.5365825639. The cubic root of 61709455 is about 395.1699423635.

It can be divided in two parts, 6170 and 9455, that added together give a 6-th power (15625 = 5⁶).

The spelling of 61709455 in words is "sixty-one million, seven hundred nine thousand, four hundred fifty-five".