61975394 has 16 divisors (see below), whose sum is σ = 101488632. Its totient is φ = 28211328.

The previous prime is 61975379. The next prime is 61975399. The reversal of 61975394 is 49357916.

It can be written as a sum of positive squares in 4 ways, for example, as 41770369 + 20205025 = 6463^2 + 4495^2 .

It is a super-2 number, since 2×61975394² = 7681898922910472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61975399) 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, 14429 + ... + 18224.

Almost surely, 2^61975394 is an apocalyptic number.

61975394 is a deficient number, since it is larger than the sum of its proper divisors (39513238).

61975394 is a wasteful number, since it uses less digits than its factorization.

61975394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32741.

The product of its digits is 204120, while the sum is 44.

The square root of 61975394 is about 7872.4452363926. The cubic root of 61975394 is about 395.7367949641.

The spelling of 61975394 in words is "sixty-one million, nine hundred seventy-five thousand, three hundred ninety-four".