61642454 has 8 divisors (see below), whose sum is σ = 92722320. Its totient is φ = 30735016.

The previous prime is 61642453. The next prime is 61642457. The reversal of 61642454 is 45424616.

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

It is a self number, because there is not a number n which added to its sum of digits gives 61642454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61642453) 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, 42209 + ... + 43644.

It is an arithmetic number, because the mean of its divisors is an integer number (11590290).

Almost surely, 2^61642454 is an apocalyptic number.

61642454 is a deficient number, since it is larger than the sum of its proper divisors (31079866).

61642454 is a wasteful number, since it uses less digits than its factorization.

61642454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86214.

The product of its digits is 23040, while the sum is 32.

The square root of 61642454 is about 7851.2708525436. The cubic root of 61642454 is about 395.0268720703.

The spelling of 61642454 in words is "sixty-one million, six hundred forty-two thousand, four hundred fifty-four".