61973904 has 60 divisors (see below), whose sum is σ = 162911696. Its totient is φ = 20300544.

The previous prime is 61973897. The next prime is 61973969. The reversal of 61973904 is 40937916.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 380127 + ... + 380289.

Almost surely, 2^61973904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61973904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81455848).

61973904 is an abundant number, since it is smaller than the sum of its proper divisors (100937792).

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

61973904 is a wasteful number, since it uses less digits than its factorization.

61973904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 61973904 is about 7872.3506019486. The cubic root of 61973904 is about 395.7336235305.

It can be divided in two parts, 6197 and 3904, that added together give a palindrome (10101).

The spelling of 61973904 in words is "sixty-one million, nine hundred seventy-three thousand, nine hundred four".