61641316 has 12 divisors (see below), whose sum is σ = 117678960. Its totient is φ = 28018760.

The previous prime is 61641313. The next prime is 61641323. The reversal of 61641316 is 61314616.

It is not an unprimeable number, because it can be changed into a prime (61641313) 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, 700426 + ... + 700513.

It is an arithmetic number, because the mean of its divisors is an integer number (9806580).

Almost surely, 2^61641316 is an apocalyptic number.

It is an amenable number.

61641316 is a deficient number, since it is larger than the sum of its proper divisors (56037644).

61641316 is a wasteful number, since it uses less digits than its factorization.

61641316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1400954 (or 1400952 counting only the distinct ones).

The product of its digits is 2592, while the sum is 28.

The square root of 61641316 is about 7851.1983798653. The cubic root of 61641316 is about 395.0244411517.

The spelling of 61641316 in words is "sixty-one million, six hundred forty-one thousand, three hundred sixteen".