61047997 has 12 divisors (see below), whose sum is σ = 63123424. Its totient is φ = 59033520.

The previous prime is 61047989. The next prime is 61048027. The reversal of 61047997 is 79974016.

It is a happy number.

It is not a de Polignac number, because 61047997 - 2³ = 61047989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61047937) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 289222 + ... + 289432.

Almost surely, 2^61047997 is an apocalyptic number.

It is an amenable number.

61047997 is a deficient number, since it is larger than the sum of its proper divisors (2075427).

61047997 is a wasteful number, since it uses less digits than its factorization.

61047997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 61047997 is about 7813.3217647810. The cubic root of 61047997 is about 393.7529371747.

The spelling of 61047997 in words is "sixty-one million, forty-seven thousand, nine hundred ninety-seven".