61406719 has 8 divisors (see below), whose sum is σ = 67053312. Its totient is φ = 55770840.

The previous prime is 61406713. The next prime is 61406729. The reversal of 61406719 is 91760416.

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

It is a cyclic number.

It is not a de Polignac number, because 61406719 - 2⁹ = 61406207 is a prime.

It is a super-2 number, since 2×61406719² = 7541570276689922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61406713) 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, 13692 + ... + 17614.

It is an arithmetic number, because the mean of its divisors is an integer number (8381664).

Almost surely, 2^61406719 is an apocalyptic number.

61406719 is a deficient number, since it is larger than the sum of its proper divisors (5646593).

61406719 is a wasteful number, since it uses less digits than its factorization.

61406719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5357.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 61406719 is about 7836.2439344370. The cubic root of 61406719 is about 394.5226707569.

The spelling of 61406719 in words is "sixty-one million, four hundred six thousand, seven hundred nineteen".