61632436 has 6 divisors (see below), whose sum is σ = 107856770. Its totient is φ = 30816216.

The previous prime is 61632401. The next prime is 61632437. The reversal of 61632436 is 63423616.

It can be written as a sum of positive squares in only one way, i.e., 59382436 + 2250000 = 7706^2 + 1500^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61632398 and 61632407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61632437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7704051 + ... + 7704058.

Almost surely, 2^61632436 is an apocalyptic number.

It is an amenable number.

61632436 is a deficient number, since it is larger than the sum of its proper divisors (46224334).

61632436 is a wasteful number, since it uses less digits than its factorization.

61632436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15408113 (or 15408111 counting only the distinct ones).

The product of its digits is 15552, while the sum is 31.

The square root of 61632436 is about 7850.6328407333. The cubic root of 61632436 is about 395.0054712696.

The spelling of 61632436 in words is "sixty-one million, six hundred thirty-two thousand, four hundred thirty-six".