61424789 has 4 divisors (see below), whose sum is σ = 64095456. Its totient is φ = 58754124.

The previous prime is 61424767. The next prime is 61424801. The reversal of 61424789 is 98742416.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61424789 - 2⁸ = 61424533 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61424089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1335299 + ... + 1335344.

It is an arithmetic number, because the mean of its divisors is an integer number (16023864).

Almost surely, 2^61424789 is an apocalyptic number.

It is an amenable number.

61424789 is a deficient number, since it is larger than the sum of its proper divisors (2670667).

61424789 is a wasteful number, since it uses less digits than its factorization.

61424789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2670666.

The product of its digits is 96768, while the sum is 41.

The square root of 61424789 is about 7837.3968254772. The cubic root of 61424789 is about 394.5613653581.

The spelling of 61424789 in words is "sixty-one million, four hundred twenty-four thousand, seven hundred eighty-nine".