61669372 has 6 divisors (see below), whose sum is σ = 107921408. Its totient is φ = 30834684.

The previous prime is 61669339. The next prime is 61669373. The reversal of 61669372 is 27396616.

It is a super-2 number, since 2×61669372² = 7606222885748768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61669373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7708668 + ... + 7708675.

Almost surely, 2^61669372 is an apocalyptic number.

It is an amenable number.

61669372 is a deficient number, since it is larger than the sum of its proper divisors (46252036).

61669372 is a wasteful number, since it uses less digits than its factorization.

61669372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15417347 (or 15417345 counting only the distinct ones).

The product of its digits is 81648, while the sum is 40.

The square root of 61669372 is about 7852.9849102109. The cubic root of 61669372 is about 395.0843637568.

The spelling of 61669372 in words is "sixty-one million, six hundred sixty-nine thousand, three hundred seventy-two".