61743421 has 8 divisors (see below), whose sum is σ = 62546400. Its totient is φ = 60944400.

The previous prime is 61743419. The next prime is 61743427. The reversal of 61743421 is 12434716.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61743421 - 2¹ = 61743419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61743421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61743427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41590 + ... + 43048.

It is an arithmetic number, because the mean of its divisors is an integer number (7818300).

Almost surely, 2^61743421 is an apocalyptic number.

It is an amenable number.

61743421 is a deficient number, since it is larger than the sum of its proper divisors (802979).

61743421 is a wasteful number, since it uses less digits than its factorization.

61743421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1979.

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

The square root of 61743421 is about 7857.6981998547. The cubic root of 61743421 is about 395.2424319595.

The spelling of 61743421 in words is "sixty-one million, seven hundred forty-three thousand, four hundred twenty-one".