61418829 has 4 divisors (see below), whose sum is σ = 81891776. Its totient is φ = 40945884.

The previous prime is 61418827. The next prime is 61418857. The reversal of 61418829 is 92881416.

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 not a de Polignac number, because 61418829 - 2¹ = 61418827 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61418827) 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, 10236469 + ... + 10236474.

It is an arithmetic number, because the mean of its divisors is an integer number (20472944).

Almost surely, 2^61418829 is an apocalyptic number.

It is an amenable number.

61418829 is a deficient number, since it is larger than the sum of its proper divisors (20472947).

61418829 is a wasteful number, since it uses less digits than its factorization.

61418829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20472946.

The product of its digits is 27648, while the sum is 39.

The square root of 61418829 is about 7837.0165879625. The cubic root of 61418829 is about 394.5486036168.

The spelling of 61418829 in words is "sixty-one million, four hundred eighteen thousand, eight hundred twenty-nine".