61621946 has 8 divisors (see below), whose sum is σ = 94931220. Its totient is φ = 29978208.

The previous prime is 61621927. The next prime is 61621969. The reversal of 61621946 is 64912616.

It can be written as a sum of positive squares in 2 ways, for example, as 60918025 + 703921 = 7805^2 + 839^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416291 + ... + 416438.

Almost surely, 2^61621946 is an apocalyptic number.

61621946 is a deficient number, since it is larger than the sum of its proper divisors (33309274).

61621946 is a wasteful number, since it uses less digits than its factorization.

61621946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832768.

The product of its digits is 15552, while the sum is 35.

The square root of 61621946 is about 7849.9647132965. The cubic root of 61621946 is about 394.9830596805.

The spelling of 61621946 in words is "sixty-one million, six hundred twenty-one thousand, nine hundred forty-six".