61701811 has 4 divisors (see below), whose sum is σ = 63692224. Its totient is φ = 59711400.

The previous prime is 61701803. The next prime is 61701817. The reversal of 61701811 is 11810716.

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 61701811 - 2³ = 61701803 is a prime.

It is a super-2 number, since 2×61701811² = 7614226961359442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61701817) 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, 995160 + ... + 995221.

It is an arithmetic number, because the mean of its divisors is an integer number (15923056).

Almost surely, 2^61701811 is an apocalyptic number.

61701811 is a deficient number, since it is larger than the sum of its proper divisors (1990413).

61701811 is a wasteful number, since it uses less digits than its factorization.

61701811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990412.

The product of its (nonzero) digits is 336, while the sum is 25.

The square root of 61701811 is about 7855.0500316675. The cubic root of 61701811 is about 395.1536250165.

The spelling of 61701811 in words is "sixty-one million, seven hundred one thousand, eight hundred eleven".