61423705 has 12 divisors (see below), whose sum is σ = 85742820. Its totient is φ = 42118944.

The previous prime is 61423697. The next prime is 61423721. The reversal of 61423705 is 50732416.

It can be written as a sum of positive squares in 2 ways, for example, as 37687321 + 23736384 = 6139^2 + 4872^2 .

It is not a de Polignac number, because 61423705 - 2³ = 61423697 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125110 + ... + 125599.

It is an arithmetic number, because the mean of its divisors is an integer number (7145235).

Almost surely, 2^61423705 is an apocalyptic number.

It is an amenable number.

61423705 is a deficient number, since it is larger than the sum of its proper divisors (24319115).

61423705 is a wasteful number, since it uses less digits than its factorization.

61423705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250728 (or 250721 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 61423705 is about 7837.3276695568. The cubic root of 61423705 is about 394.5590443243.

It can be divided in two parts, 61423 and 705, that added together give a triangular number (62128 = T₃₅₂).

The spelling of 61423705 in words is "sixty-one million, four hundred twenty-three thousand, seven hundred five".