61761608 has 8 divisors (see below), whose sum is σ = 115803030. Its totient is φ = 30880800.

The previous prime is 61761607. The next prime is 61761611. The reversal of 61761608 is 80616716.

It can be written as a sum of positive squares in only one way, i.e., 45131524 + 16630084 = 6718^2 + 4078^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (61761607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3860093 + ... + 3860108.

Almost surely, 2^61761608 is an apocalyptic number.

It is an amenable number.

61761608 is a deficient number, since it is larger than the sum of its proper divisors (54041422).

61761608 is a wasteful number, since it uses less digits than its factorization.

61761608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7720207 (or 7720203 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 61761608 is about 7858.8553873958. The cubic root of 61761608 is about 395.2812353835.

The spelling of 61761608 in words is "sixty-one million, seven hundred sixty-one thousand, six hundred eight".