61772368 has 20 divisors (see below), whose sum is σ = 136781920. Its totient is φ = 26473824.

The previous prime is 61772357. The next prime is 61772369. The reversal of 61772368 is 86327716.

It is a self number, because there is not a number n which added to its sum of digits gives 61772368.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61772369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275658 + ... + 275881.

It is an arithmetic number, because the mean of its divisors is an integer number (6839096).

Almost surely, 2^61772368 is an apocalyptic number.

It is an amenable number.

61772368 is an abundant number, since it is smaller than the sum of its proper divisors (75009552).

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

61772368 is a wasteful number, since it uses less digits than its factorization.

61772368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551554 (or 551548 counting only the distinct ones).

The product of its digits is 84672, while the sum is 40.

The square root of 61772368 is about 7859.5399356451. The cubic root of 61772368 is about 395.3041891205.

The spelling of 61772368 in words is "sixty-one million, seven hundred seventy-two thousand, three hundred sixty-eight".