61379019 has 32 divisors (see below), whose sum is σ = 102197760. Its totient is φ = 36124704.

The previous prime is 61379011. The next prime is 61379023. The reversal of 61379019 is 91097316.

61379019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61379019 - 2³ = 61379011 is a prime.

It is a super-2 number, since 2×61379019² = 7534767946804722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61379011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4272 + ... + 11874.

It is an arithmetic number, because the mean of its divisors is an integer number (3193680).

Almost surely, 2^61379019 is an apocalyptic number.

61379019 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

61379019 is a deficient number, since it is larger than the sum of its proper divisors (40818741).

61379019 is a wasteful number, since it uses less digits than its factorization.

61379019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7648 (or 7642 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 61379019 is about 7834.4763066844. The cubic root of 61379019 is about 394.4633399987.

The spelling of 61379019 in words is "sixty-one million, three hundred seventy-nine thousand, nineteen".