61723497 has 16 divisors (see below), whose sum is σ = 89936640. Its totient is φ = 37342800.

The previous prime is 61723483. The next prime is 61723507. The reversal of 61723497 is 79432716.

It is not a de Polignac number, because 61723497 - 2¹¹ = 61721449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61723477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23122 + ... + 25652.

It is an arithmetic number, because the mean of its divisors is an integer number (5621040).

Almost surely, 2^61723497 is an apocalyptic number.

It is an amenable number.

61723497 is a deficient number, since it is larger than the sum of its proper divisors (28213143).

61723497 is a wasteful number, since it uses less digits than its factorization.

61723497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3284.

The product of its digits is 63504, while the sum is 39.

The square root of 61723497 is about 7856.4302962605. The cubic root of 61723497 is about 395.1999137593.

It can be divided in two parts, 6172 and 3497, that added together give a palindrome (9669).

The spelling of 61723497 in words is "sixty-one million, seven hundred twenty-three thousand, four hundred ninety-seven".