61497837 has 18 divisors (see below), whose sum is σ = 92867502. Its totient is φ = 39212976.

The previous prime is 61497833. The next prime is 61497841. The reversal of 61497837 is 73879416.

It is an interprime number because it is at equal distance from previous prime (61497833) and next prime (61497841).

It can be written as a sum of positive squares in only one way, i.e., 53494596 + 8003241 = 7314^2 + 2829^2 .

It is not a de Polignac number, because 61497837 - 2² = 61497833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61497792 and 61497801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61497833) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1698 + ... + 11219.

Almost surely, 2^61497837 is an apocalyptic number.

It is an amenable number.

61497837 is a deficient number, since it is larger than the sum of its proper divisors (31369665).

61497837 is a wasteful number, since it uses less digits than its factorization.

61497837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12969 (or 12943 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 61497837 is about 7842.0556616234. The cubic root of 61497837 is about 394.7177110363.

The spelling of 61497837 in words is "sixty-one million, four hundred ninety-seven thousand, eight hundred thirty-seven".