61697402 has 16 divisors (see below), whose sum is σ = 100398312. Its totient is φ = 28266240.

The previous prime is 61697401. The next prime is 61697411. The reversal of 61697402 is 20479616.

It can be written as a sum of positive squares in 4 ways, for example, as 38551681 + 23145721 = 6209^2 + 4811^2 .

It is not an unprimeable number, because it can be changed into a prime (61697401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5099 + ... + 12222.

Almost surely, 2^61697402 is an apocalyptic number.

61697402 is a deficient number, since it is larger than the sum of its proper divisors (38700910).

61697402 is a wasteful number, since it uses less digits than its factorization.

61697402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17473.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 61697402 is about 7854.7693791734. The cubic root of 61697402 is about 395.1442126843.

The spelling of 61697402 in words is "sixty-one million, six hundred ninety-seven thousand, four hundred two".