61909235 has 4 divisors (see below), whose sum is σ = 74291088. Its totient is φ = 49527384.

The previous prime is 61909217. The next prime is 61909241. The reversal of 61909235 is 53290916.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61909235 - 2¹⁰ = 61908211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61909195 and 61909204.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6190919 + ... + 6190928.

It is an arithmetic number, because the mean of its divisors is an integer number (18572772).

Almost surely, 2^61909235 is an apocalyptic number.

61909235 is a deficient number, since it is larger than the sum of its proper divisors (12381853).

61909235 is a wasteful number, since it uses less digits than its factorization.

61909235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12381852.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 61909235 is about 7868.2421798010. The cubic root of 61909235 is about 395.5959279159.

The spelling of 61909235 in words is "sixty-one million, nine hundred nine thousand, two hundred thirty-five".