61397037 has 48 divisors (see below), whose sum is σ = 102211200. Its totient is φ = 35199360.

The previous prime is 61397033. The next prime is 61397057. The reversal of 61397037 is 73079316.

61397037 is a `hidden beast` number, since 613 + 9 + 7 + 0 + 37 = 666.

61397037 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61397037 - 2² = 61397033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61396992 and 61397010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61397033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 157639 + ... + 158027.

It is an arithmetic number, because the mean of its divisors is an integer number (2129400).

Almost surely, 2^61397037 is an apocalyptic number.

It is an amenable number.

61397037 is a deficient number, since it is larger than the sum of its proper divisors (40814163).

61397037 is a wasteful number, since it uses less digits than its factorization.

61397037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498 (or 495 counting only the distinct ones).

The product of its (nonzero) digits is 23814, while the sum is 36.

The square root of 61397037 is about 7835.6261396266. The cubic root of 61397037 is about 394.5019348650.

The spelling of 61397037 in words is "sixty-one million, three hundred ninety-seven thousand, thirty-seven".