61764488 has 8 divisors (see below), whose sum is σ = 115808430. Its totient is φ = 30882240.

The previous prime is 61764481. The next prime is 61764503. The reversal of 61764488 is 88446716.

It can be written as a sum of positive squares in only one way, i.e., 52388644 + 9375844 = 7238^2 + 3062^2 .

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 (61764481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3860273 + ... + 3860288.

Almost surely, 2^61764488 is an apocalyptic number.

It is an amenable number.

61764488 is a deficient number, since it is larger than the sum of its proper divisors (54043942).

61764488 is a wasteful number, since it uses less digits than its factorization.

61764488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7720567 (or 7720563 counting only the distinct ones).

The product of its digits is 258048, while the sum is 44.

The square root of 61764488 is about 7859.0386180499. The cubic root of 61764488 is about 395.2873793960.

The spelling of 61764488 in words is "sixty-one million, seven hundred sixty-four thousand, four hundred eighty-eight".