61399461 has 16 divisors (see below), whose sum is σ = 87070464. Its totient is φ = 38352384.

The previous prime is 61399453. The next prime is 61399463. The reversal of 61399461 is 16499316.

61399461 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 61399461 - 2³ = 61399453 is a prime.

It is a super-2 number, since 2×61399461² = 7539787622181042, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61399463) 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 15 ways as a sum of consecutive naturals, for example, 9300 + ... + 14466.

It is an arithmetic number, because the mean of its divisors is an integer number (5441904).

Almost surely, 2^61399461 is an apocalyptic number.

It is an amenable number.

61399461 is a deficient number, since it is larger than the sum of its proper divisors (25671003).

61399461 is a wasteful number, since it uses less digits than its factorization.

61399461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5420.

The product of its digits is 34992, while the sum is 39.

The square root of 61399461 is about 7835.7808162301. The cubic root of 61399461 is about 394.5071265385.

The spelling of 61399461 in words is "sixty-one million, three hundred ninety-nine thousand, four hundred sixty-one".