61470771 has 4 divisors (see below), whose sum is σ = 81961032. Its totient is φ = 40980512.

The previous prime is 61470763. The next prime is 61470781. The reversal of 61470771 is 17707416.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61470771 - 2³ = 61470763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61470701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10245126 + ... + 10245131.

It is an arithmetic number, because the mean of its divisors is an integer number (20490258).

Almost surely, 2^61470771 is an apocalyptic number.

61470771 is a deficient number, since it is larger than the sum of its proper divisors (20490261).

61470771 is a wasteful number, since it uses less digits than its factorization.

61470771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20490260.

The product of its (nonzero) digits is 8232, while the sum is 33.

The square root of 61470771 is about 7840.3297762275. The cubic root of 61470771 is about 394.6597957351.

The spelling of 61470771 in words is "sixty-one million, four hundred seventy thousand, seven hundred seventy-one".