61623351 has 12 divisors (see below), whose sum is σ = 94247712. Its totient is φ = 38665536.

The previous prime is 61623349. The next prime is 61623361. The reversal of 61623351 is 15332616.

61623351 = T₂₁₂₃ + T₂₁₂₄ + ... + T₂₁₄₉.

61623351 is a `hidden beast` number, since 6 + 1 + 623 + 35 + 1 = 666.

It is not a de Polignac number, because 61623351 - 2¹ = 61623349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61623311) 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, 201231 + ... + 201536.

It is an arithmetic number, because the mean of its divisors is an integer number (7853976).

Almost surely, 2^61623351 is an apocalyptic number.

61623351 is a deficient number, since it is larger than the sum of its proper divisors (32624361).

61623351 is a wasteful number, since it uses less digits than its factorization.

61623351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402790 (or 402787 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 61623351 is about 7850.0542036345. The cubic root of 61623351 is about 394.9860615709.

Adding to 61623351 its reverse (15332616), we get a palindrome (76955967).

The spelling of 61623351 in words is "sixty-one million, six hundred twenty-three thousand, three hundred fifty-one".