61914905 has 16 divisors (see below), whose sum is σ = 82596864. Its totient is φ = 44245440.

The previous prime is 61914899. The next prime is 61914989. The reversal of 61914905 is 50941916.

It is not a de Polignac number, because 61914905 - 2⁶ = 61914841 is a prime.

It is a super-2 number, since 2×61914905² = 7666910922318050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13349 + ... + 17378.

It is an arithmetic number, because the mean of its divisors is an integer number (5162304).

Almost surely, 2^61914905 is an apocalyptic number.

61914905 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61914905 is a deficient number, since it is larger than the sum of its proper divisors (20681959).

61914905 is a wasteful number, since it uses less digits than its factorization.

61914905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30776.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 61914905 is about 7868.6024807459. The cubic root of 61914905 is about 395.6080045225.

The spelling of 61914905 in words is "sixty-one million, nine hundred fourteen thousand, nine hundred five".