61658402 has 16 divisors (see below), whose sum is σ = 99929592. Its totient is φ = 28364160.

The previous prime is 61658381. The next prime is 61658417. The reversal of 61658402 is 20485616.

61658402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 38800441 + 22857961 = 6229^2 + 4781^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4502 + ... + 11982.

Almost surely, 2^61658402 is an apocalyptic number.

61658402 is a deficient number, since it is larger than the sum of its proper divisors (38271190).

61658402 is a wasteful number, since it uses less digits than its factorization.

61658402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7813.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 61658402 is about 7852.2864186172. The cubic root of 61658402 is about 395.0609359604.

The spelling of 61658402 in words is "sixty-one million, six hundred fifty-eight thousand, four hundred two".