61877328 has 20 divisors (see below), whose sum is σ = 159849888. Its totient is φ = 20625760.

The previous prime is 61877287. The next prime is 61877359. The reversal of 61877328 is 82377816.

It is a self number, because there is not a number n which added to its sum of digits gives 61877328.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 644508 + ... + 644603.

Almost surely, 2^61877328 is an apocalyptic number.

It is an amenable number.

61877328 is an abundant number, since it is smaller than the sum of its proper divisors (97972560).

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

61877328 is a wasteful number, since it uses less digits than its factorization.

61877328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289122 (or 1289116 counting only the distinct ones).

The product of its digits is 112896, while the sum is 42.

The square root of 61877328 is about 7866.2143372781. The cubic root of 61877328 is about 395.5279550287.

The spelling of 61877328 in words is "sixty-one million, eight hundred seventy-seven thousand, three hundred twenty-eight".