61898480 has 40 divisors (see below), whose sum is σ = 164474592. Its totient is φ = 21222144.

The previous prime is 61898477. The next prime is 61898503. The reversal of 61898480 is 8489816.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

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, 54707 + ... + 55826.

Almost surely, 2^61898480 is an apocalyptic number.

It is an amenable number.

61898480 is an abundant number, since it is smaller than the sum of its proper divisors (102576112).

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

61898480 is a wasteful number, since it uses less digits than its factorization.

61898480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110553 (or 110547 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 44.

The square root of 61898480 is about 7867.5587064858. The cubic root of 61898480 is about 395.5730186757.

The spelling of 61898480 in words is "sixty-one million, eight hundred ninety-eight thousand, four hundred eighty".