61451623 has 8 divisors (see below), whose sum is σ = 62622000. Its totient is φ = 60291648.

The previous prime is 61451573. The next prime is 61451629. The reversal of 61451623 is 32615416.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61451623 - 2¹⁷ = 61320551 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61451591 and 61451600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61451629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9883 + ... + 14851.

It is an arithmetic number, because the mean of its divisors is an integer number (7827750).

Almost surely, 2^61451623 is an apocalyptic number.

61451623 is a deficient number, since it is larger than the sum of its proper divisors (1170377).

61451623 is a wasteful number, since it uses less digits than its factorization.

61451623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5201.

The product of its digits is 4320, while the sum is 28.

The square root of 61451623 is about 7839.1085590136. The cubic root of 61451623 is about 394.6188129481.

The spelling of 61451623 in words is "sixty-one million, four hundred fifty-one thousand, six hundred twenty-three".