61450680 has 64 divisors (see below), whose sum is σ = 190310400. Its totient is φ = 15857280.

The previous prime is 61450679. The next prime is 61450709. The reversal of 61450680 is 8605416.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 4540 + ... + 11979.

It is an arithmetic number, because the mean of its divisors is an integer number (2973600).

Almost surely, 2^61450680 is an apocalyptic number.

61450680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61450680 is an abundant number, since it is smaller than the sum of its proper divisors (128859720).

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

61450680 is a wasteful number, since it uses less digits than its factorization.

61450680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16564 (or 16560 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 61450680 is about 7839.0484116377. The cubic root of 61450680 is about 394.6167944093.

The spelling of 61450680 in words is "sixty-one million, four hundred fifty thousand, six hundred eighty".