61676139 has 8 divisors (see below), whose sum is σ = 93982720. Its totient is φ = 35243496.

The previous prime is 61676137. The next prime is 61676159. The reversal of 61676139 is 93167616.

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

It is not a de Polignac number, because 61676139 - 2¹ = 61676137 is a prime.

It is a super-2 number, since 2×61676139² = 7607892243894642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61676097 and 61676106.

It is not an unprimeable number, because it can be changed into a prime (61676137) 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, 1468459 + ... + 1468500.

It is an arithmetic number, because the mean of its divisors is an integer number (11747840).

Almost surely, 2^61676139 is an apocalyptic number.

61676139 is a deficient number, since it is larger than the sum of its proper divisors (32306581).

61676139 is a wasteful number, since it uses less digits than its factorization.

61676139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2936969.

The product of its digits is 40824, while the sum is 39.

The square root of 61676139 is about 7853.4157536705. The cubic root of 61676139 is about 395.0988141397.

The spelling of 61676139 in words is "sixty-one million, six hundred seventy-six thousand, one hundred thirty-nine".