61502661 has 12 divisors (see below), whose sum is σ = 96913440. Its totient is φ = 37274280.

The previous prime is 61502659. The next prime is 61502669. The reversal of 61502661 is 16620516.

It is a happy number.

It is not a de Polignac number, because 61502661 - 2¹ = 61502659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61502669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 310521 + ... + 310718.

It is an arithmetic number, because the mean of its divisors is an integer number (8076120).

Almost surely, 2^61502661 is an apocalyptic number.

It is an amenable number.

61502661 is a deficient number, since it is larger than the sum of its proper divisors (35410779).

61502661 is a wasteful number, since it uses less digits than its factorization.

61502661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621256 (or 621253 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 61502661 is about 7842.3632280072. The cubic root of 61502661 is about 394.7280315535.

The spelling of 61502661 in words is "sixty-one million, five hundred two thousand, six hundred sixty-one".