61140488 has 8 divisors (see below), whose sum is σ = 114638430. Its totient is φ = 30570240.

The previous prime is 61140473. The next prime is 61140523. The reversal of 61140488 is 88404116.

It can be written as a sum of positive squares in only one way, i.e., 60497284 + 643204 = 7778^2 + 802^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3821273 + ... + 3821288.

Almost surely, 2^61140488 is an apocalyptic number.

It is an amenable number.

61140488 is a deficient number, since it is larger than the sum of its proper divisors (53497942).

61140488 is a wasteful number, since it uses less digits than its factorization.

61140488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7642567 (or 7642563 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 61140488 is about 7819.2383260775. The cubic root of 61140488 is about 393.9516891301.

The spelling of 61140488 in words is "sixty-one million, one hundred forty thousand, four hundred eighty-eight".