61909485 has 16 divisors (see below), whose sum is σ = 108060480. Its totient is φ = 30016640.

The previous prime is 61909469. The next prime is 61909499. The reversal of 61909485 is 58490916.

It is not a de Polignac number, because 61909485 - 2⁴ = 61909469 is a prime.

It is a congruent 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, 187440 + ... + 187769.

It is an arithmetic number, because the mean of its divisors is an integer number (6753780).

Almost surely, 2^61909485 is an apocalyptic number.

It is an amenable number.

61909485 is a deficient number, since it is larger than the sum of its proper divisors (46150995).

61909485 is a wasteful number, since it uses less digits than its factorization.

61909485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375228.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 61909485 is about 7868.2580664338. The cubic root of 61909485 is about 395.5964604097.

The spelling of 61909485 in words is "sixty-one million, nine hundred nine thousand, four hundred eighty-five".