61697902 has 16 divisors (see below), whose sum is σ = 111335040. Its totient is φ = 25050168.

The previous prime is 61697873. The next prime is 61697903. The reversal of 61697902 is 20979616.

It is a super-2 number, since 2×61697902² = 7613262222403208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61697903) 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, 115708 + ... + 116239.

It is an arithmetic number, because the mean of its divisors is an integer number (6958440).

Almost surely, 2^61697902 is an apocalyptic number.

61697902 is a deficient number, since it is larger than the sum of its proper divisors (49637138).

61697902 is a wasteful number, since it uses less digits than its factorization.

61697902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231975.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 61697902 is about 7854.8012069052. The cubic root of 61697902 is about 395.1452801067.

The spelling of 61697902 in words is "sixty-one million, six hundred ninety-seven thousand, nine hundred two".