61697416 has 24 divisors (see below), whose sum is σ = 127157310. Its totient is φ = 28043840.

The previous prime is 61697411. The next prime is 61697423. The reversal of 61697416 is 61479616.

It can be written as a sum of positive squares in only one way, i.e., 61685316 + 12100 = 7854^2 + 110^2 .

It is a super-2 number, since 2×61697416² = 7613142282154112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61697411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30901 + ... + 32836.

Almost surely, 2^61697416 is an apocalyptic number.

It is an amenable number.

61697416 is an abundant number, since it is smaller than the sum of its proper divisors (65459894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61697416 is a wasteful number, since it uses less digits than its factorization.

61697416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63765 (or 63750 counting only the distinct ones).

The product of its digits is 54432, while the sum is 40.

The square root of 61697416 is about 7854.7702703516. The cubic root of 61697416 is about 395.1442425722.

The spelling of 61697416 in words is "sixty-one million, six hundred ninety-seven thousand, four hundred sixteen".