61489260 has 96 divisors (see below), whose sum is σ = 218641920. Its totient is φ = 14053824.

The previous prime is 61489247. The next prime is 61489261. The reversal of 61489260 is 6298416.

61489260 = T₃₃₆ + T₃₃₇ + ... + T₇₄₀.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (61489261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4354 + ... + 11913.

It is an arithmetic number, because the mean of its divisors is an integer number (2277520).

Almost surely, 2^61489260 is an apocalyptic number.

61489260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61489260 is an abundant number, since it is smaller than the sum of its proper divisors (157152660).

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

61489260 is a wasteful number, since it uses less digits than its factorization.

61489260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16292 (or 16284 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 61489260 is about 7841.5087833911. The cubic root of 61489260 is about 394.6993599778.

The spelling of 61489260 in words is "sixty-one million, four hundred eighty-nine thousand, two hundred sixty".