61654994 has 4 divisors (see below), whose sum is σ = 92482494. Its totient is φ = 30827496.

The previous prime is 61654993. The next prime is 61655003. The reversal of 61654994 is 49945616.

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., 47100769 + 14554225 = 6863^2 + 3815^2 .

It is not an unprimeable number, because it can be changed into a prime (61654993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15413747 + ... + 15413750.

Almost surely, 2^61654994 is an apocalyptic number.

61654994 is a deficient number, since it is larger than the sum of its proper divisors (30827500).

61654994 is a wasteful number, since it uses less digits than its factorization.

61654994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30827499.

The product of its digits is 233280, while the sum is 44.

The square root of 61654994 is about 7852.0694087610. The cubic root of 61654994 is about 395.0536571877.

The spelling of 61654994 in words is "sixty-one million, six hundred fifty-four thousand, nine hundred ninety-four".