61471020 has 48 divisors (see below), whose sum is σ = 185361120. Its totient is φ = 15131136.

The previous prime is 61470989. The next prime is 61471051. The reversal of 61471020 is 2017416.

It is an interprime number because it is at equal distance from previous prime (61470989) and next prime (61471051).

It is a super-3 number, since 3×61471020³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38625 + ... + 40184.

It is an arithmetic number, because the mean of its divisors is an integer number (3861690).

Almost surely, 2^61471020 is an apocalyptic number.

61471020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61471020 is an abundant number, since it is smaller than the sum of its proper divisors (123890100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61471020 is a wasteful number, since it uses less digits than its factorization.

61471020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78834 (or 78832 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 61471020 is about 7840.3456556455. The cubic root of 61471020 is about 394.6603286180.

Adding to 61471020 its reverse (2017416), we get a palindrome (63488436).

The spelling of 61471020 in words is "sixty-one million, four hundred seventy-one thousand, twenty".