61699163 has 4 divisors (see below), whose sum is σ = 62298288. Its totient is φ = 61100040.

The previous prime is 61699159. The next prime is 61699193. The reversal of 61699163 is 36199616.

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 61699163 - 2² = 61699159 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61699163.

It is not an unprimeable number, because it can be changed into a prime (61699193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299408 + ... + 299613.

It is an arithmetic number, because the mean of its divisors is an integer number (15574572).

Almost surely, 2^61699163 is an apocalyptic number.

61699163 is a deficient number, since it is larger than the sum of its proper divisors (599125).

61699163 is a wasteful number, since it uses less digits than its factorization.

61699163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599124.

The product of its digits is 52488, while the sum is 41.

The square root of 61699163 is about 7854.8814758722. The cubic root of 61699163 is about 395.1479721205.

The spelling of 61699163 in words is "sixty-one million, six hundred ninety-nine thousand, one hundred sixty-three".