61354993 has 8 divisors (see below), whose sum is σ = 70551488. Its totient is φ = 52266384.

The previous prime is 61354963. The next prime is 61354999. The reversal of 61354993 is 39945316.

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 61354993 - 2²⁵ = 27800561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61354999) 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, 25746 + ... + 28027.

It is an arithmetic number, because the mean of its divisors is an integer number (8818936).

Almost surely, 2^61354993 is an apocalyptic number.

It is an amenable number.

61354993 is a deficient number, since it is larger than the sum of its proper divisors (9196495).

61354993 is a wasteful number, since it uses less digits than its factorization.

61354993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53943.

The product of its digits is 87480, while the sum is 40.

The square root of 61354993 is about 7832.9428058680. The cubic root of 61354993 is about 394.4118641403.

The spelling of 61354993 in words is "sixty-one million, three hundred fifty-four thousand, nine hundred ninety-three".