61740406 has 48 divisors (see below), whose sum is σ = 118111392. Its totient is φ = 23569920.

The previous prime is 61740377. The next prime is 61740409. The reversal of 61740406 is 60404716.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61740409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 174726 + ... + 175078.

It is an arithmetic number, because the mean of its divisors is an integer number (2460654).

Almost surely, 2^61740406 is an apocalyptic number.

61740406 is a deficient number, since it is larger than the sum of its proper divisors (56370986).

61740406 is a wasteful number, since it uses less digits than its factorization.

61740406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 61740406 is about 7857.5063474362. The cubic root of 61740406 is about 395.2359984788.

The spelling of 61740406 in words is "sixty-one million, seven hundred forty thousand, four hundred six".