61913080 has 16 divisors (see below), whose sum is σ = 139304520. Its totient is φ = 24765216.

The previous prime is 61913069. The next prime is 61913081. The reversal of 61913080 is 8031916.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61913081) 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, 773874 + ... + 773953.

Almost surely, 2^61913080 is an apocalyptic number.

It is an amenable number.

61913080 is an abundant number, since it is smaller than the sum of its proper divisors (77391440).

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

61913080 is a wasteful number, since it uses less digits than its factorization.

61913080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547838 (or 1547834 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 61913080 is about 7868.4865126656. The cubic root of 61913080 is about 395.6041175118.

Adding to 61913080 its reverse (8031916), we get a palindrome (69944996).

The spelling of 61913080 in words is "sixty-one million, nine hundred thirteen thousand, eighty".