61547994 has 12 divisors (see below), whose sum is σ = 133354026. Its totient is φ = 20515992.

The previous prime is 61547951. The next prime is 61548001. The reversal of 61547994 is 49974516.

It can be written as a sum of positive squares in only one way, i.e., 61544025 + 3969 = 7845^2 + 63^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1709649 + ... + 1709684.

Almost surely, 2^61547994 is an apocalyptic number.

61547994 is an abundant number, since it is smaller than the sum of its proper divisors (71806032).

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

61547994 is a wasteful number, since it uses less digits than its factorization.

61547994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3419341 (or 3419338 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 61547994 is about 7845.2529595928. The cubic root of 61547994 is about 394.8249911041.

The spelling of 61547994 in words is "sixty-one million, five hundred forty-seven thousand, nine hundred ninety-four".