61808395 has 16 divisors (see below), whose sum is σ = 81224928. Its totient is φ = 44778240.

The previous prime is 61808381. The next prime is 61808407. The reversal of 61808395 is 59380816.

It is a happy number.

It is not a de Polignac number, because 61808395 - 2¹⁵ = 61775627 is a prime.

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, 13207 + ... + 17263.

It is an arithmetic number, because the mean of its divisors is an integer number (5076558).

Almost surely, 2^61808395 is an apocalyptic number.

61808395 is a deficient number, since it is larger than the sum of its proper divisors (19416533).

61808395 is a wasteful number, since it uses less digits than its factorization.

61808395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4350.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 61808395 is about 7861.8315296119. The cubic root of 61808395 is about 395.3810242099.

The spelling of 61808395 in words is "sixty-one million, eight hundred eight thousand, three hundred ninety-five".