61642354 has 4 divisors (see below), whose sum is σ = 92463534. Its totient is φ = 30821176.

The previous prime is 61642351. The next prime is 61642381. The reversal of 61642354 is 45324616.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 58936329 + 2706025 = 7677^2 + 1645^2 .

It is a super-4 number, since 4×61642354⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (61642351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15410587 + ... + 15410590.

Almost surely, 2^61642354 is an apocalyptic number.

61642354 is a deficient number, since it is larger than the sum of its proper divisors (30821180).

61642354 is a wasteful number, since it uses less digits than its factorization.

61642354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30821179.

The product of its digits is 17280, while the sum is 31.

The square root of 61642354 is about 7851.2644841452. The cubic root of 61642354 is about 395.0266584582.

The spelling of 61642354 in words is "sixty-one million, six hundred forty-two thousand, three hundred fifty-four".