61412819 has 4 divisors (see below), whose sum is σ = 66136896. Its totient is φ = 56688744.

The previous prime is 61412809. The next prime is 61412833. The reversal of 61412819 is 91821416.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61412819 - 2¹² = 61408723 is a prime.

It is a super-2 number, since 2×61412819² = 7543068675053522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61412809) 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, 2362019 + ... + 2362044.

It is an arithmetic number, because the mean of its divisors is an integer number (16534224).

Almost surely, 2^61412819 is an apocalyptic number.

61412819 is a deficient number, since it is larger than the sum of its proper divisors (4724077).

61412819 is a wasteful number, since it uses less digits than its factorization.

61412819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4724076.

The product of its digits is 3456, while the sum is 32.

The square root of 61412819 is about 7836.6331418537. The cubic root of 61412819 is about 394.5357339779.

The spelling of 61412819 in words is "sixty-one million, four hundred twelve thousand, eight hundred nineteen".