61869471 has 32 divisors (see below), whose sum is σ = 88998912. Its totient is φ = 38142720.

The previous prime is 61869463. The next prime is 61869473. The reversal of 61869471 is 17496816.

It is not a de Polignac number, because 61869471 - 2³ = 61869463 is a prime.

It is a super-3 number, since 3×61869471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61869473) 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, 357541 + ... + 357713.

It is an arithmetic number, because the mean of its divisors is an integer number (2781216).

Almost surely, 2^61869471 is an apocalyptic number.

61869471 is a deficient number, since it is larger than the sum of its proper divisors (27129441).

61869471 is a wasteful number, since it uses less digits than its factorization.

61869471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343.

The product of its digits is 72576, while the sum is 42.

The square root of 61869471 is about 7865.7149071143. The cubic root of 61869471 is about 395.5112133303.

The spelling of 61869471 in words is "sixty-one million, eight hundred sixty-nine thousand, four hundred seventy-one".