61457623 has 8 divisors (see below), whose sum is σ = 63011520. Its totient is φ = 59914080.

The previous prime is 61457611. The next prime is 61457639. The reversal of 61457623 is 32675416.

It is a happy number.

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 61457623 - 2²¹ = 59360471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61457603) 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, 10213 + ... + 15073.

It is an arithmetic number, because the mean of its divisors is an integer number (7876440).

Almost surely, 2^61457623 is an apocalyptic number.

61457623 is a deficient number, since it is larger than the sum of its proper divisors (1553897).

61457623 is a wasteful number, since it uses less digits than its factorization.

61457623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5177.

The product of its digits is 30240, while the sum is 34.

The square root of 61457623 is about 7839.4912462481. The cubic root of 61457623 is about 394.6316557649.

The spelling of 61457623 in words is "sixty-one million, four hundred fifty-seven thousand, six hundred twenty-three".